A cutter for cutting off a rising head wire bundle

Abstract

The present invention discloses a cutter for cutting a riser wire bundle. In the present invention, a fixed knife is detachably provided in a cylinder, and the fixed knife includes a fixed seat and a wedge-shaped knife body I connected thereto, and the end of the knife body I is located directly below the middle position of the incision; a movable knife is slidably provided in the cylinder, and the movable knife includes a movable seat in the shape of a cylinder, and the diameter of the cylinder is consistent with the inner diameter of the cylinder; a knife body II is provided on the movable seat, and the knife body II is a wedge-shaped structure, and the upper end of the knife body I is at the same height as the lower end of the knife body II; a spring is also connected to the plane of the movable seat away from the knife body II, and the other end of the spring is connected to a pressure cap I, and the pressure cap I is sealed with the inner wall of the cylinder through a sealing ring, and the pressure cap is connected to an air intake pipe, and the air intake pipe is connected to an external air source. With this type of cutter in the present application, regardless of the thickness of the riser wire bundle to be cut, the wire bundle is between the knife body I and the knife body II, and the shear force on each fiber is the same, and there will be no problem of continuous fiber cutting.

Description

Technical Field

[0001] The invention relates to the technical field of fiber production equipment, and in particular to a cutter for cutting a riser fiber bundle. Background Art

[0002] In the process of chemical fiber production, high molecular polymer is melted to become a high-temperature viscous fluid with a certain viscosity, and then squeezed into the spinning box through a melt metering pump. After being fully mixed and temperature balanced in the spinning box, it enters the spinning assembly in the spinning box. After melt distribution, sea sand filtration and pressurization in the spinning assembly, the melt fills the entire assembly cavity. The high-temperature melt with uniform pressure and consistent viscosity is extruded through a spinneret with many circular holes. The extruded melt stream is cooled by a blower or annular blower at a temperature of 20 degrees and a humidity of 65%, and solidified into fibers with uniform thickness, certain strength and elongation. The fibers that are fully cooled and solidified at each spinning position are lifted, merged into a bundle, and fall into a silk barrel for post-processing.

[0003] No matter all spinning positions have just started spinning, or a certain position is undergoing a plate clearing operation during normal production, the usual head lifting procedure is to lift the previous position of the tow first, and the remaining spinning positions are sequentially incorporated into the tow that has already fallen into the barrel normally.

[0004] Before the 1980s, most of the chemical fiber factories built in China had low output and slow spinning speed. The highest spinning speed was only 600 meters per minute. There were two ways of winding silk: one was manual winding without reducing the speed, that is, the silk bundles of each spinning position were manually pulled to the feeding wheel by hand and dropped into the silk barrel; the other was to reduce the speed first, manually wind the silk of the previous position, restore to the process speed, and then introduce the silk bundle of one position into the silk-wasting wheel, and then use a bamboo board to pick it and merge it into the normally operating silk bundle. When it is just merged into the normally operating silk bundle, the silk must be quickly pinched off by hand, and then the remaining silk of each position is wound in turn. These two winding methods have slow winding speed, low success rate, and large silk waste. They are only suitable for spinning positions with a small number of spinneret holes, and there is also a certain degree of danger.

[0005] After the 1980s, with the increase in chemical fiber production and the improvement in spinning speed, the maximum spinning speed can reach 1200 meters. Manual winding is no longer possible. People have designed a head lifter to replace manual winding and lifting. The structure of the head lifter is divided into two parts. One part is the tow network crosslinker, which consists of two upper and lower stainless steel plates and a relay. There are three air outlets on the lower stainless steel plate for compressed air to be ejected instantly. The normally operating tow and the tow to be lifted pass through the middle of the two steel plates together. The three air outlets are just below the tow. The compressed air is ejected instantly to firmly interweave the normally operating tow and the tow to be lifted. The other part is a cutter for cutting the lifted tow. The cutter is composed of an inner knife and an outer knife, glands at both ends, a spring and a sealing ring. The outer knife (equivalent to a fixed knife) is a stainless steel round tube with a cut on one side for the wire bundle to pass through in the middle. The inner knife (equivalent to a movable knife) is a stainless steel cylinder with a cut on one side, which is the same size as the cut of the outer knife. The inner knife cylinder is installed in the stainless steel round tube of the outer knife. The inner knife cylinder and the inner wall of the outer knife round tube are tightly matched. A spring is connected to the bottom of the inner knife and the bottom gland. The bottom of the inner knife, the bottom gland and the outer knife tube wall form a closed cavity. The bottom gland has a compressed air inlet. When the wire bundle is growing, a suction gun is used to introduce the wire bundle into the cut, and the compressed air pushes the inner knife. The cut of the inner knife moves forward and exceeds the cut of the outer knife, thereby cutting the wire bundle.

[0006] However, in actual production, this type of fixed knife and movable knife can sometimes cut the fibers and sometimes cannot, or the fibers seem to be cut but not quite, which affects the head lift rate. The main reason is that different spinning equipment or the same spinning equipment produces different products, and the total denier of fiber bundles in each spinning position is different. If the fiber bundles are distributed in a large range in the incision and the fibers are well interwoven, the fibers are easy to cut. If the fiber bundles are distributed in a small range in the incision and the fibers are not well interwoven and are in a dispersed state, the movable knife and the fixed knife will not easily cut the fiber bundles, or some of the fibers in a bundle are cut and some are not. Not only can the fibers in this spinning position not be wound, but the normally operating fiber bundles can even be broken or entangled in the roller, and the amount of waste silk increases.

[0007] The invention of the device is to solve the problem that no matter how thick the fiber bundle is at the spinning position and no matter how large the distribution range of the fiber bundle is in the incision, the fiber bundle can be cut off at the moment of the head lifting. Summary of the invention

[0008] In order to make up for the deficiencies of the prior art, the present invention provides a cutter for cutting a riser wire bundle.

[0009] The technical solution of the present invention is:

[0010] A cutter for cutting a rising head wire bundle, comprising a cylinder, a fixed knife, a movable knife, a gland I, a gland II, a spring and a sealing ring; the cylinder is symmetrically provided with two cutouts for the wire bundle to pass through;

[0011] A fixed knife is detachably provided in the cylinder, and the fixed knife includes a fixed seat, one end of which is fixedly connected to a wedge-shaped knife body I, and the end of the knife body I is located just below the middle position of the incision;

[0012] A movable knife is also slidably provided in the cylinder, and the movable knife includes a movable seat in a cylindrical structure, the diameter of the movable seat is consistent with the inner diameter of the cylinder, and the movable seat is slidably connected to the inner wall of the cylinder; a knife body II is fixedly provided on the side of the movable seat opposite to the knife body I, and the knife body II is a wedge-shaped structure that is narrow at the top and wide at the bottom, the width of the lower end of the knife body II is consistent with the inner diameter of the cylinder, and the upper end of the knife body I is consistent with the lower end of the knife body II in height; a spring is also connected to the plane of the movable seat away from the knife body II, and the other end of the spring is connected to a pressure cover I, and the pressure cover I is sealed with the inner wall of the cylinder through a sealing ring, and the pressure cover I is connected to an air intake pipe for conveying compressed air, and the air intake pipe is fixedly connected to an external air source.

[0013] In the present application, the gland, the cylinder and the movable seat form a closed cavity. When the lifting head tow needs to be cut, the staff can supply compressed gas into the cavity. When the compressed air instantly enters the cavity between the movable seat and the gland, the compressed gas will push the movable knife to move toward the knife body I of the fixed knife until the knife body II of the movable knife is pressed tightly against the knife body I, forming a scissor-like structure, instantly cutting the tow and merging the fibers into the normally operating tow, completing the lifting head operation, reducing the waste rate, improving the finished fiber yield, and reducing energy consumption. In addition, In the process of supplying compressed gas into the cavity, the spring is stretched; when the wire bundle is cut off, the staff can stop supplying compressed air to the cavity between the movable seat and the pressure cover. At this time, under the action of the elastic restoring force of the spring to restore to its initial state, the movable knife will be pulled back to its initial position by the spring; this type of cutter in the present application, regardless of the thickness of the wire bundle to be lifted, is located between the blade body I of the fixed knife and the blade body II of the movable knife, and the shear force on each fiber is the same, so there will be no problem of continuous fiber cutting.

[0014] Preferably, the fixing seat is in a semi-cylindrical shape, and the diameter of the fixing seat is consistent with the inner diameter of the cylinder. Since the diameter of the fixing seat of the fixed knife is consistent with the inner diameter of the cylinder, the fixed knife will not shake in the front-back direction.

[0015] Preferably, the fixing seat is also provided with a guide rail I, and the inner wall of the cylinder has a guide groove I along the cylinder axis direction, which is matched with the guide rail I, and the guide rail I and the guide groove I are respectively provided with screw holes of the same size, and the two screw holes are threadedly connected by a fixing screw. During installation, the staff can first insert the guide rail I into the guide groove, and then push the fixing seat to make the screw hole on the guide rail I coincide with the screw hole on the guide groove, and then fix it with a fixing screw outside the cylinder, so that the fixed knife is fixed in the cylinder, and the problem of the fixed knife moving in the left and right directions will not occur during use.

[0016] Preferably, two guide rails II are symmetrically arranged on the movable seat, and guide grooves II respectively matched with the two guide rails II are opened on the inner side wall of the cylinder, and the two guide rails II are respectively slidably connected to the corresponding guide grooves II.

[0017] Preferably, the other end of the cylinder is detachably connected with a pressure cap II. The above arrangement can effectively protect the fixed knife in the cylinder from being damaged.

[0018] Preferably, a hanging point is further provided on the plane of the movable seat away from the blade body II, the hanging point is connected to one end of the spring, and the other end of the spring is connected to the pressure cover I through a threaded buckle.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In the present application, the pressure cover, the cylinder and the movable seat form an enclosed cavity. When it is necessary to cut the lifting head wire bundle, the staff can supply compressed gas into the cavity. When the compressed air instantly enters the cavity between the movable seat and the pressure cover, the compressed gas will push the movable knife to move toward the blade body I of the fixed knife until the blade body II of the movable knife is tightly pressed against the blade body I, forming a scissors-like structure, and instantly cuts the wire bundle. During this process, the spring is in a stretched state; and after the wire bundle is cut, the staff can stop supplying compressed air to the cavity between the movable seat and the pressure cover. At this time, under the action of the elastic restoring force of the spring to restore to its initial state, the movable knife will be pulled back to its initial position by the spring; for this type of cutter in the present application, no matter how thick the wire bundle that needs to be lifted is, the wire bundle is between the blade body I of the fixed knife and the blade body II of the movable knife. Therefore, the shearing force of the blade body I and the blade body II on each fiber is the same, so there will be no problem of continuous fiber cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional structural schematic diagram of the present application;

[0022] Figure 2 It is a schematic diagram of the structure of the fixed knife in this application;

[0023] Figure 3 It is a schematic diagram of the structure of the blade body I in this application;

[0024] Figure 4 It is a schematic diagram of the structure of the movable knife in this application.

[0025] In the figure, 1. cylinder; 2. fixed knife; 3. movable knife; 4. pressure cover I; 5. pressure cover II; 6. spring; 7. guide groove I; 8. fixing screw; 9. guide groove II; 10. air inlet pipe; 11. guide rail I; 12. guide rail II; 13. incision; 14. fixed seat; 15. knife body I; 16. movable seat; 17. knife body II; 18. hanging point; 19. sealing ring. DETAILED DESCRIPTION

[0026] like Figures 1 to 4 As shown, a cutter for cutting a rising head wire bundle is composed of a cylinder 1, a fixed knife 2, a movable knife 3, a pressure cover Ⅰ4, a pressure cover Ⅱ5, a spring 6 and a sealing ring; two incisions 13 are symmetrically provided on the cylinder 1 for the wire bundle to pass through; a fixed knife 2 is detachably provided in the cylinder 1, and the fixed knife 2 includes a semi-cylindrical fixed seat 14, the diameter of the fixed seat 14 is consistent with the inner diameter of the cylinder 1, and a movable seat 16 is slidably connected to the inner wall of the cylinder 1, and one end of the fixed seat 14 is fixedly connected to a wedge-shaped knife body Ⅰ15, and the end of the knife body Ⅰ15 is located directly below the middle position of the incision 13; a movable knife 3 is also slidably provided in the cylinder 1, and the movable knife 3 comprises a movable seat 16 in a cylindrical shape, the diameter of the movable seat 16 is consistent with the inner diameter of the cylinder 1; a knife body II 17 is fixedly arranged on the side of the movable seat 16 opposite to the knife body I 15, the knife body II 17 is a wedge-shaped structure with a narrow upper part and a wide lower part, and the width of the lower end of the knife body II 17 is consistent with the inner diameter of the cylinder 1; a hanging point 18 is arranged on the plane of the movable seat 16 away from the knife body II 17, the hanging point 18 is connected to one end of the spring 6, the other end of the spring 6 is connected to the gland I 4 through a thread, the gland I 4 is sealed and connected to the inner wall of the cylinder 1 through a sealing ring 19, the gland I 4 is connected to an air inlet pipe 10 for conveying compressed air, and the air inlet pipe 10 is fixedly connected to an external air source.

[0027] In the present application, the cylinder 1 is provided with a detachable fixed knife 2 by the following configuration: a guide rail Ⅰ11 is provided on the fixing seat 14, and a guide groove Ⅰ7 matching the guide rail Ⅰ11 is provided on the inner wall of the cylinder 1 along the cylinder axis direction, and screw holes of the same size are provided on the guide rail Ⅰ11 and the guide groove Ⅰ7, respectively, and the two screw holes are threadedly connected by a fixing screw 8. During installation, the staff can first insert the guide rail Ⅰ into the guide groove, and then push the fixing seat to make the screw hole on the guide rail Ⅰ coincide with the screw hole on the guide groove, and then fix it with a fixing screw outside the cylinder, so that the fixed knife is fixed in the cylinder, and the problem of the fixed knife moving in the left and right directions will not occur during use.

[0028] In the present application, the sliding connection between the movable seat 16 and the inner wall of the cylinder 1 is achieved by the following settings: two guide rails Ⅱ12 are symmetrically arranged on the movable seat 16, and guide grooves Ⅱ9 respectively matched with the two guide rails Ⅱ12 are opened on the inner wall of the cylinder 1, and the two guide rails Ⅱ12 are respectively slidably connected with the corresponding guide grooves Ⅱ9.

[0029] In addition, the other end of the cylinder 1 is detachably connected with a pressure cap II 5.

[0030] In the present application, the pressure cover, cylinder and movable seat form an enclosed cavity. When it is necessary to cut the lifting head wire bundle, the staff can supply compressed gas into the cavity. When the compressed air instantly enters the cavity between the movable seat and the pressure cover, the compressed gas will push the movable knife to move toward the blade body I of the fixed knife until the blade body II of the movable knife is tightly pressed on the blade body I, forming a scissors-like structure, and instantly cuts the wire bundle. During this process, the spring is in a stretched state; after the wire bundle is cut, the staff can stop supplying compressed air to the cavity between the movable seat and the pressure cover. At this time, under the action of the elastic restoring force of the spring to restore to its initial state, the movable knife will be pulled back to its initial position by the spring; this type of cutter in the present application, regardless of the thickness of the wire bundle that needs to be lifted, is located between the fixed knife and the movable knife, and the shear force on each fiber is the same, so there will be no problem of uncut fibers.

Claims

1. A cutter for cutting a rising head tow, characterized in that: It consists of a cylinder, a fixed knife, a movable knife, a gland I, a gland II, a spring and a sealing ring; the cylinder is symmetrically provided with two cutouts for the passage of the tow; A fixed knife is detachably provided in the cylinder, and the fixed knife includes a fixed seat, one end of which is fixedly connected to a wedge-shaped knife body I, and the end of the knife body I is located just below the middle position of the incision; A movable knife is also slidably provided in the cylinder, and the movable knife includes a movable seat in a cylindrical structure, the diameter of the movable seat is consistent with the inner diameter of the cylinder, and the movable seat is slidably connected to the inner wall of the cylinder; a knife body II is fixedly provided on the side of the movable seat opposite to the knife body I, the width of the lower end of the knife body II is consistent with the inner diameter of the cylinder, the knife body II is a wedge-shaped structure that is narrow at the top and wide at the bottom, and the upper end of the knife body I is consistent in height with the lower end of the knife body II; a spring is also connected to the plane of the movable seat away from the knife body II, and the other end of the spring is connected to a pressure cover I, and the pressure cover I is sealed with the inner wall of the cylinder through a sealing ring, and the pressure cover I is connected to an air intake pipe for conveying compressed air, and the air intake pipe is fixedly connected to an external air source; The fixing seat is in the shape of a semi-cylinder, and the diameter of the fixing seat is consistent with the inner diameter of the cylinder; Two guide rails II are symmetrically arranged on the movable seat, and guide grooves II respectively matched with the two guide rails II are opened on the inner wall of the cylinder. The two guide rails II are respectively slidably connected with the corresponding guide grooves II.

2. The cutter for cutting a raised-end tow according to claim 1, characterized in that: The fixing seat is also provided with a guide rail I, and the inner wall of the cylinder has a guide groove I matched with the guide rail I along the cylinder axis direction. The guide rail I and the guide groove I are respectively provided with screw holes of the same size, and the two screw holes are threadedly connected by a fixing screw.

3. The cutter for cutting a raised-end tow according to claim 1, characterized in that: The other end of the cylinder is detachably connected with a pressure cap II.

4. The cutter for cutting a raised-end tow according to claim 1, characterized in that: A hanging point is also provided on the plane of the movable seat away from the knife body II, the hanging point is connected to one end of the spring, and the other end of the spring is connected to the pressure cover I through a threaded buckle.

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