A precision loose tube stripping machine and working method thereof

Abstract

The application discloses a precision yarn releasing drum machine and a working method thereof, and relates to the technical field of yarn releasing drum machines.The machine comprises a supporting frame, and a wire clamping and cutting part is arranged between a compression roller and a tension device on one side of a transverse connecting block.The wire clamping and cutting part is arranged, and an intermittent driving unit is started.The first connecting shaft is rotated by 90 degrees through the intermittent driving unit, so that the clamping plate is moved to the center of the wire ring to clamp the yarn, the yarn between the wire rings is limited, and then the yarn between the wire rings is cut through continuous operation of the cutting driving unit.At this time, one end of the yarn connected with the yarn releasing drum is clamped by the clamping plate, and one end of the yarn connected with the original yarn drum is also clamped by the clamping plate, so that the yarn is prevented from falling off from the original yarn drum after being cut, and then the yarn is released through reverse operation of the cutting driving unit, and then the finished yarn releasing drum can be taken off.

Description

Technical Field

[0001] This invention relates to the field of drum loosening machine technology, specifically a precision drum loosening machine and its working method. Background Technology

[0002] Loose winding machines are key equipment used for yarn winding in the textile industry. They feature digital control, variable frequency speed regulation, and high-efficiency winding, and are suitable for various scenarios such as knitting, weaving, and tube dyeing.

[0003] The core function of a yarn loosening machine is to rewind the yarn from the original yarn bobbin (such as tube yarn or cone yarn) into a "loose bobbin" that meets the requirements of subsequent processes (such as dyeing, weaving, warping, etc.). The winding length is a key process parameter (directly affecting the amount of yarn used and batch consistency). When the winding reaches the specified length, even if there is excess yarn in the original yarn bobbin, it must be cut. However, during the cutting process, because one end of the excess yarn on the original yarn bobbin cannot be fixed after the yarn is cut, it is impossible to quickly wind the end of the excess yarn onto the loose bobbin after the new loose bobbin tube is fixed and installed. This will affect the overall operating efficiency of the equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a precision yarn loosening machine and its working method in order to solve the problem that one end of the remaining yarn on the original yarn bobbin cannot be fixed after the yarn breaks.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a precision bobbin loosening machine, comprising a support frame, a raw yarn bobbin placement frame installed at the bottom of the support frame, a wire guide frame provided on one side of the support frame, a tensioner located above the wire guide frame on one side of the support frame, a pressure roller located above the tensioner installed on the top of the support frame, a bobbin loosening mounting frame located above the pressure roller installed on the top of the support frame, a positioning seat installed at one end of the support frame, a transverse connecting block provided on one side of the positioning seat, and a wire clamping and cutting component located between the pressure roller and the tensioner installed on one side of the transverse connecting block; the wire clamping and cutting component includes a first connecting shaft that passes through the transverse connecting block and is rotatably connected to the transverse connecting block, and a bidirectional... The cam has guide grooves on both sides, and a locking pin is slidably connected to the inner side of the guide groove. A splicing plate located above the bidirectional cam is installed on one side of the locking pin. A wire ring is installed at one end of the splicing plate. An L-shaped limiting plate is installed on the top of the transverse connecting block. A push block extending to the other side of the L-shaped limiting plate is inserted into one side of the L-shaped limiting plate. A connecting plate is installed on the push block. A telescopic spring connected to the L-shaped limiting plate is provided on the connecting plate. The two ends of the splicing plate are rotatably connected to the diagonal bracing plates through a rotating shaft. The top of the diagonal bracing plates is rotatably connected to one end of the push block. A clamping plate is installed at the end of the push block away from the diagonal bracing plates. A cutting drive unit connected to the first connecting shaft is provided on one side of the positioning seat.

[0006] As a further embodiment of the present invention: the number of the guide rings is set to two, and the two guide rings are symmetrically arranged along the transverse central axis of the transverse connecting block. Two splicing connecting plates are installed on the outer wall of the guide rings, and the two splicing connecting plates are symmetrically arranged along the vertical central axis of the guide rings.

[0007] As a further embodiment of the present invention: the clamping plate is composed of a concave plate and a convex plate, the concave plate is connected to a push block above one of the splicing connecting plates, the convex plate is connected to a push block above the other splicing connecting plate, and one side of the concave plate and the convex plate fits into each other.

[0008] As a further embodiment of the present invention: the lengths of the convex plate and the concave plate are both greater than the inner diameter of the wire ring.

[0009] As a further embodiment of the present invention: the cutting drive unit includes a guide frame mounted on the top of the positioning seat, an L-shaped slider inserted into one end of the guide frame, a servo motor mounted on one side of the positioning seat, a lead screw connected to the output end of the servo motor, the L-shaped slider movably sleeved on the outside of the lead screw, a first spur gear mounted on the end of the first connecting shaft away from the bidirectional cam, a support bar meshing with the first spur gear at one end of the L-shaped slider, a through groove opened on the inner side of the transverse connecting block, a second connecting shaft rotatably connected to the inner side of the through groove, a worm gear mounted on the second connecting shaft, a worm meshing with the worm gear rotatably connected to the inner side of the through groove, a second spur gear at one end of the worm gear, a movable frame on the outside of the second connecting shaft, and a cutting blade on one side of the movable frame.

[0010] As a further aspect of the present invention, the length of the tangent blade is greater than the diameter of the inner wall of the wire loop.

[0011] As a further embodiment of the present invention: the second spur gear and the first spur gear are at the same horizontal position, and the diameters of the second spur gear and the first spur gear are equal.

[0012] As a further embodiment of the present invention: a damping block is provided at the connection between the first connecting shaft and the transverse connecting block, and the distance between the second spur gear and the first spur gear is greater than the length of the support bar.

[0013] This invention also discloses a method for operating a precision drum loosening machine, which includes the following steps using the aforementioned precision drum loosening machine:

[0014] S1: Place the raw yarn bobbin to be processed vertically onto the raw yarn bobbin placement rack of the equipment, ensuring that the center of the yarn bobbin is aligned with the axis of the raw yarn bobbin placement rack and there is no shaking;

[0015] S2: Install the loosened yarn bobbin inside the loosened yarn bobbin mounting frame, draw the yarn end out from the original yarn bobbin, and pass it through the guide wire frame, tensioner, and yarn clamping cutter in sequence according to the "yarn guide path" marked on the equipment, and then connect it to the loosened yarn bobbin on the loosened yarn bobbin mounting frame through the pressure roller;

[0016] S3: Start the pressure roller and the loosening bobbin mounting frame. The loosening bobbin is driven to rotate to wind up the yarn on the original bobbin. When the specified weight is reached, the loosening bobbin mounting frame stops operating. At this time, the yarn is cut by operating the wire clamping and cutting device.

[0017] S4: Remove the finished loosened yarn bobbin, then install the new loosened yarn bobbin inside the loosened yarn bobbin mounting frame, and reconnect one end of the remaining yarn from the original yarn bobbin to the loosened yarn bobbin.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. By setting up the clamping and cutting components, the intermittent drive unit is activated. The intermittent drive unit causes the first connecting shaft to rotate 90 degrees. The inclined support plate then pushes the push block horizontally by squeezing, which moves the clamping plate toward the center of the guide ring to clamp the yarn and limit the yarn between the guide rings. Then, the cutting drive unit continuously cuts the yarn between the guide rings. At this time, one end of the yarn connected to the loose yarn bobbin is clamped by the clamping plate, and the other end of the yarn connected to the original yarn bobbin is also clamped by the clamping plate. This prevents one end of the yarn in the original yarn bobbin from falling off after the yarn is cut. Then, the yarn is released by the reverse operation of the cutting drive unit, and the wound loose yarn bobbin can be removed.

[0020] 2. By setting an intermittent drive unit, the lead screw is rotated by starting the servo motor. At this time, the L-shaped slider, which is limited by the guide frame, moves horizontally along the lead screw, thereby causing the support bar to drive the first spur gear to rotate. The first spur gear rotates 90 degrees through the first connecting shaft, thereby limiting the yarn between the two guide rings. Then, the L-shaped slider continues to drive the support bar to move. At this time, the support bar separates from the first spur gear and meshes with the second spur gear. The support bar drives the worm gear to rotate by rotating the second spur gear, thereby causing the cutting blade to rotate towards the guide ring, thus cutting the yarn between the guide rings. This achieves the orderly fixing and cutting of the yarn. After the yarn is cut, the direction of the servo motor is used to rotate the cutting blade into the through groove, and at the same time, the clamping plate loses its grip on the yarn. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram showing the connection between the conductor frame, tensioner, and support frame of the present invention;

[0023] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a schematic diagram showing the connection between the positioning seat and the bidirectional cam of the present invention;

[0025] Figure 5 This is a schematic diagram showing the connection between the splicing plate and the bidirectional cam of the present invention;

[0026] Figure 6 This is a schematic diagram showing the connection between the concave plate and the convex plate of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the through-slot of the present invention;

[0028] Figure 8 This is a front view of the wire clamping and cutting component of the present invention.

[0029] In the diagram: 1. Support frame; 2. Raw yarn bobbin placement frame; 3. Wire guide frame; 4. Tensioner; 5. Pressure roller; 6. Loose bobbin mounting frame; 7. Servo motor; 8. Lead screw; 9. Positioning seat; 10. L-shaped slider; 11. Guide frame; 12. Transverse connecting block; 13. First spur gear; 14. Support bar; 15. Splicing connecting plate; 16. Diagonal bracing connecting plate; 17. Clamping plate; 1701. Concave plate; 1702. Convex plate; 18. Wire guide ring; 19. Push block; 20. Connecting plate; 21. Telescopic spring; 22. Through groove; 23. Bidirectional cam; 24. Guide groove; 25. Locking pin; 26. L-shaped limiting connecting plate; 27. Second spur gear; 28. Worm gear; 29. ​​First connecting shaft; 30. Second connecting shaft; 31. Worm wheel; 32. Movable frame; 33. Wire cutter. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0032] Please see Figures 1 to 8In this embodiment of the invention, a precision yarn loosening machine and its working method include a support frame 1, a raw yarn bobbin placement frame 2 installed at the bottom of the support frame 1, a wire guide frame 3 provided on one side of the support frame 1, a tensioner 4 located above the wire guide frame 3 on one side of the support frame 1, a pressure roller 5 located above the tensioner 4 installed at the top of the support frame 1, a yarn loosening mounting frame 6 located above the pressure roller 5 installed at the top of the support frame 1, a positioning seat 9 installed at one end of the support frame 1, a transverse connecting block 12 provided on one side of the positioning seat 9, and a wire clamping and cutting component located between the pressure roller 5 and the tensioner 4 installed on one side of the transverse connecting block 12.

[0033] In this embodiment: The raw yarn bobbin to be processed is vertically placed on the raw yarn bobbin placement rack 2 of the equipment, ensuring that the center of the yarn bobbin is aligned with the axis of the raw yarn bobbin placement rack 2 without any shaking. Then, the loose yarn bobbin is installed inside the loose yarn bobbin mounting rack 6. The yarn end is led out from the raw yarn bobbin and passes through the guide wire frame 3, tensioner 4, and wire clamping cutter in sequence according to the "yarn guide path" marked on the equipment. Then, it is connected to the loose yarn bobbin on the loose yarn bobbin mounting rack 6 through the pressure roller 5. Then, the pressure roller 5 and the loose yarn bobbin mounting rack 6 are started. The loose yarn bobbin is rotated by the loose yarn bobbin mounting rack 6 to wind up the yarn on the raw yarn bobbin. When the specified weight is reached, the loose yarn bobbin mounting rack 6 stops operating. At this time, the yarn is cut by operating the wire clamping cutter. The wound loose yarn bobbin is removed. Then, a brand new loose yarn bobbin is installed inside the loose yarn bobbin mounting rack 6, and one end of the remaining yarn of the raw yarn bobbin is connected to the loose yarn bobbin again.

[0034] Please refer to this carefully. Figures 2-7 The wire clamping cutting component includes a first connecting shaft 29 that passes through and is rotatably connected to the transverse connecting block 12. One end of the first connecting shaft 29 is fixedly connected to a bidirectional cam 23. Guide grooves 24 are provided on both sides of the bidirectional cam 23. A locking pin 25 is slidably connected to the inner side of the guide groove 24. A splicing plate 15 located above the bidirectional cam 23 is installed on one side of the locking pin 25. A wire guide ring 18 is installed on one end of the splicing plate 15. An L-shaped limiting plate 26 is installed on the top of the transverse connecting block 12. A push block 19 extending to the other side of the L-shaped limiting connecting plate 26 is inserted into one side of the connecting plate 26. A connecting plate 20 is installed on the push block 19. A telescopic spring 21 connected to the L-shaped limiting connecting plate 26 is provided on the connecting plate 20. The two ends of the splicing connecting plate 15 are rotatably connected to the inclined bracing connecting plate 16 through a rotating shaft. The top of the inclined bracing connecting plate 16 is rotatably connected to one end of the push block 19. A clamping plate 17 is installed on the end of the push block 19 away from the inclined bracing connecting plate 16. A cutting drive unit connected to the first connecting shaft 29 is provided on one side of the positioning seat 9.

[0035] The conductor ring 18 is provided in two parts, and the two conductor rings 18 are symmetrically arranged along the transverse central axis of the transverse connecting block 12. Two splicing connecting plates 15 are installed on the outer wall of the conductor ring 18, and the two splicing connecting plates 15 are symmetrically arranged along the vertical central axis of the conductor ring 18. The clamping plate 17 is composed of a concave plate 1701 and a convex plate 1702. The concave plate 1701 is connected to the push block 19 above one of the splicing connecting plates 15, and the convex plate 1702 is connected to the push block 19 above the other splicing connecting plate 15. The concave plate 1701 and the convex plate 1702 fit each other on one side. The lengths of the convex plate 1702 and the concave plate 1701 are both greater than the inner diameter of the conductor ring 18.

[0036] In this embodiment: During the threading process, the yarn passing through the tensioner 4 is passed through the guide ring 18. The guide ring 18 limits the range of motion of the yarn. When the yarn is cut, the intermittent drive unit is activated first, causing the first connecting shaft 29 to rotate 90 degrees. During this process, the first connecting shaft 29 drives the bidirectional cam 23 to rotate 90 degrees. At this time, the bidirectional cam 23 guides the locking pin 25 through the guide groove 24, causing the splicing plate 15 above the bidirectional cam 23 and the splicing plate 15 below the bidirectional cam 23 to move away from the center of the bidirectional cam 23, thereby causing the splicing plate 15 to squeeze one end of the inclined support plate 16. At this time, the inclined support plate 16 will push the push block 19 to move horizontally by squeezing, which will drive the clamping plate 17 to move towards the center of the guide ring 18, thereby clamping the yarn and limiting the yarn between the guide rings 18. Then, the yarn between the guide rings 18 is cut by the continuous operation of the cutting drive unit. At this time, one end of the yarn connected to the loose yarn bobbin is clamped by the clamping plate 17, and the other end of the yarn connected to the original yarn bobbin is also clamped by the clamping plate 17. This can prevent one end of the yarn in the original yarn bobbin from falling off after the yarn is cut. Then, the yarn is released by the reverse operation of the cutting drive unit, and then the wound loose yarn bobbin can be removed.

[0037] Please refer to this carefully. Figure 4 , Figure 7 , Figure 8The cutting drive unit includes a guide frame 11 mounted on the top of the positioning seat 9. An L-shaped slider 10 is inserted into one end of the guide frame 11. A servo motor 7 is mounted on one side of the positioning seat 9. The output end of the servo motor 7 is connected to a lead screw 8. The L-shaped slider 10 is movably sleeved on the outside of the lead screw 8. A first spur gear 13 is mounted on the end of the first connecting shaft 29 away from the bidirectional cam 23. A support bar 14 that meshes with the first spur gear 13 is provided at one end of the L-shaped slider 10. A through groove 22 is opened on the inner side of the transverse connecting block 12. A second connecting shaft 30 is rotatably connected to the inner side of the through groove 22. A worm gear 31 is mounted on the second connecting shaft 30. A worm 28 that meshes with the worm gear 31 is rotatably connected to the inner side of the through groove 22. A second spur gear 27 is provided at one end of the worm 28. A movable frame 32 is provided on the outer side of the second connecting shaft 30. A cutting blade 33 is provided on one side of the movable frame 32.

[0038] Among them, the length of the tangent 33 is greater than the inner diameter of the wire ring 18, the second spur gear 27 and the first spur gear 13 are at the same horizontal position, the diameters of the second spur gear 27 and the first spur gear 13 are equal, a damping block is provided at the connection between the first connecting shaft 29 and the transverse connecting block 12, and the distance between the second spur gear 27 and the first spur gear 13 is greater than the length of the support bar 14.

[0039] In this embodiment: the servo motor 7 is started to rotate the lead screw 8. At this time, the L-shaped slider 10, which is limited by the guide frame 11, will move horizontally along the lead screw 8, thereby causing the support bar 14 to drive the first spur gear 13 to rotate. The first spur gear 13 is driven to rotate 90 degrees through the first connecting shaft 29 to limit the yarn between the two guide rings 18. Then the L-shaped slider 10 continues to drive the support bar 14 to move. At this time, the support bar 14 separates from the first spur gear 13 and meshes with the second spur gear 27. The support bar 14 drives the worm gear 28 to drive the worm wheel 31 to rotate by turning the second spur gear 27. This allows the cutting knife 33 to rotate towards the guide ring 18, thereby cutting the yarn between the guide rings 18. This achieves the orderly fixing and cutting of the yarn. After the yarn is cut, the servo motor 7 is used to rotate the cutting knife 33 into the through groove 22, and at the same time, the clamping plate 17 loses its grip on the yarn.

[0040] The following describes a working method for a precision drum loosening machine, based on the aforementioned example, which includes the following steps:

[0041] S1: Place the raw yarn bobbin to be processed vertically onto the raw yarn bobbin placement rack 2 of the equipment, ensuring that the center of the yarn bobbin is aligned with the axis of the raw yarn bobbin placement rack 2 without any shaking;

[0042] S2: Install the loosened yarn bobbin inside the loosened yarn bobbin mounting frame 6, draw the yarn end out from the original yarn bobbin, and pass through the guide wire frame 3, tensioner 4, and guide wire ring 18 in sequence according to the "yarn guide path" marked on the equipment, and then connect it to the loosened yarn bobbin on the loosened yarn bobbin mounting frame 6 through the pressure roller 5;

[0043] S3: Start the pressure roller 5 and the loosening bobbin mounting frame 6. The loosening bobbin 6 drives the rotation of the loosening bobbin to wind up the yarn on the original bobbin. When the specified weight is reached, the loosening bobbin mounting frame 6 stops operating. The servo motor 7 is started to rotate the lead screw 8. At this time, the L-shaped slider 10, which is limited by the guide frame 11, will move horizontally along the lead screw 8, thereby causing the support bar 14 to drive the first spur gear 13 to rotate. The first connecting shaft 29 rotates 90 degrees. During this process, the first connecting shaft 29 drives the bidirectional cam 23 to rotate 90 degrees. At this time, the bidirectional cam 23 guides the locking pin 25 through the guide groove 24, so that the splicing plate 15 above the bidirectional cam 23 and the splicing plate 15 below the bidirectional cam 23 move away from the center of the bidirectional cam 23, thereby causing the splicing plate 15 to move towards one end of the inclined support plate 16. When the yarn is compressed, the inclined support plate 16 will drive the push block 19 to move horizontally through compression. This will cause the clamping plate 17 to move towards the center of the guide ring 18, thereby clamping the yarn and limiting the yarn between the guide rings 18. Then, the L-shaped slider 10 continues to drive the support bar 14 to move. At this time, the support bar 14 separates from the first spur gear 13 and meshes with the second spur gear 27. The support bar 14 drives the worm gear 28 to drive the worm wheel 31 to rotate by turning the second spur gear 27. This will cause the cutting knife 33 to rotate towards the guide ring 18, thereby cutting the yarn between the guide rings 18. This achieves the orderly fixing and cutting of the yarn. After the yarn is cut, the servo motor 7 will rotate the cutting knife 33 into the through groove 22, and at the same time, the clamping plate 17 will lose its clamping of the yarn.

[0044] S4: Remove the finished loosened yarn bobbin, then install the new loosened yarn bobbin inside the loosened yarn bobbin mounting bracket 6, and reconnect one end of the remaining yarn from the original yarn bobbin to the loosened yarn bobbin.

[0045] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A precision bale uncoiler comprising a support frame (1), characterized in that, The bottom of the support frame (1) is provided with a raw yarn bobbin placing frame (2), one side of the support frame (1) is provided with a wire guide frame (3), one side of the support frame (1) is provided with a tensioner (4) above the wire guide frame (3), the top of the support frame (1) is provided with a compression roller (5) above the tensioner (4), the top of the support frame (1) is provided with a bobbin releasing frame (6) above the compression roller (5), one end of the support frame (1) is provided with a positioning seat (9), one side of the positioning seat (9) is provided with a transverse connecting block (12), one side of the transverse connecting block (12) is provided with a wire clamping and cutting piece between the compression roller (5) and the tensioner (4); the wire clamping and cutting piece comprises a first connecting shaft (29) penetrating through the transverse connecting block (12) and being rotatably connected with the transverse connecting block (12), one end of the first connecting shaft (29) is fixedly connected with a bidirectional cam (23), both sides of the bidirectional cam (23) are provided with guide grooves (24), the inner sides of the guide grooves (24) are slidably connected with clamping pins (25), one side of the clamping pin (25) is provided with a splicing connecting plate (15) above the bidirectional cam (23), one end of the splicing connecting plate (15) is provided with a wire ring (18), the top of the transverse connecting block (12) is provided with an L-shaped limiting connecting plate (26), one side of the L-shaped limiting connecting plate (26) is inserted with a push block (19) extending to the other side of the L-shaped limiting connecting plate (26), the push block (19) is provided with a connecting plate (20), the connecting plate (20) is provided with a telescopic spring (21) connected with the L-shaped limiting connecting plate (26), both ends of the splicing connecting plate (15) are rotatably connected with inclined supporting connecting plates (16) through rotating shafts, the top of the inclined supporting connecting plate (16) is rotatably connected with one end of the push block (19), the end of the push block (19) away from the inclined supporting connecting plate (16) is provided with a clamping plate (17), one side of the positioning seat (9) is provided with a cutting driving unit connected with the first connecting shaft (29); The number of the wire rings (18) is two, and the two wire rings (18) are symmetrically arranged along the transverse middle axis of the transverse connecting block (12), and the outer wall of the wire ring (18) is provided with two splicing connecting plates (15), and the two splicing connecting plates (15) are symmetrically arranged along the vertical middle axis of the wire ring (18); The clamping plate (17) is composed of a concave plate (1701) and a convex plate (1702), the concave plate (1701) is connected with the push block (19) above one of the splicing connecting plates (15), the convex plate (1702) is connected with the push block (19) above the other splicing connecting plate (15), and one side of the concave plate (1701) and one side of the convex plate (1702) are matched with each other; The lengths of the convex plate (1702) and the concave plate (1701) are greater than the inner wall diameter of the wire ring (18). The cutting drive unit comprises a guide frame (11) mounted on the top of a positioning seat (9), one end of the guide frame (11) is inserted with an L-shaped slider (10), one side of the positioning seat (9) is mounted with a servo motor (7), the output end of the servo motor (7) is connected with a lead screw (8), the L-shaped slider (10) is movably sleeved on the outside of the lead screw (8), one end of the first connecting shaft (29) away from the bidirectional cam (23) is mounted with a first spur gear (13), one end of the L-shaped slider (10) is provided with a supporting strip (14) engaged with the first spur gear (13), the inner side of the transverse connecting block (12) is provided with a through groove (22), the inner side of the through groove (22) is rotatably connected with a second connecting shaft (30), the second connecting shaft (30) is mounted with a worm wheel (31), the inner side of the through groove (22) is rotatably connected with a worm (28) engaged with the worm wheel (31), one end of the worm (28) is provided with a second spur gear (27), the outer side of the second connecting shaft (30) is provided with a movable frame (32), one side of the movable frame (32) is provided with a tangent cutter (33). The length of the tangent cutter (33) is greater than the diameter of the inner wall of the wire ring (18). The second spur gear (27) and the first spur gear (13) are at the same horizontal position, and the diameter of the second spur gear (27) is equal to that of the first spur gear (13).

2. A precision de-canning machine according to claim 1, wherein, The connecting part of the first connecting shaft (29) and the transverse connecting block (12) is provided with a damping block, and the distance between the second spur gear (27) and the first spur gear (13) is greater than the length of the supporting strip (14).

3. A method of operating a precision de-coring machine, characterized in that, The precision yarn loosening machine of claim 1 comprises the following steps: S1: vertically place the original yarn cylinder to be processed on the original yarn cylinder placing rack (2) of the equipment, and ensure that the center of the yarn cylinder is aligned with the axis of the original yarn cylinder placing rack (2) without shaking; S2: install the yarn loosening cylinder on the inner side of the yarn loosening cylinder mounting rack (6), lead the yarn head from the original yarn cylinder, and pass through the wire guide (3), the tensioner (4), and the thread clamping and cutting piece in sequence according to the "yarn guide path" marked on the equipment, and then connect the yarn loosening cylinder on the yarn loosening cylinder mounting rack (6) through the pressure roller (5); S3: start the pressure roller (5) and the yarn loosening cylinder mounting rack (6), rotate the yarn loosening cylinder through the yarn loosening cylinder mounting rack (6) to wind the yarn on the original yarn cylinder, when the winding reaches the specified weight, stop the yarn loosening cylinder mounting rack (6), and then cut the yarn by operating the thread clamping and cutting piece; S4: take down the wound yarn loosening cylinder, and then install a brand new yarn loosening cylinder on the inner side of the yarn loosening cylinder mounting rack (6), and connect the end of the remaining yarn of the original yarn cylinder to the yarn loosening cylinder again.

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