A yarn cutting device for chemical fiber yarn production

Abstract

This invention relates to the field of yarn cutting technology and discloses a yarn cutting device for chemical fiber yarn production. The device includes a platform and a vertical plate on one side of the platform. A cutting assembly is mounted on the cutting platform, and a clamping plate that moves synchronously with the cutting assembly is located below the cutting platform. It also includes a traction assembly positioned above the platform, which transports the yarn after the cutting assembly cuts it. A clamping assembly positioned below the platform clamps the yarn while the cutting assembly is cutting it. This invention connects the cutter and the cutting platform by using an ear plate, a traction plate, and a fixed shaft. This not only allows the cutter to reset after cutting but also avoids limiting its movement trajectory. The cutter, driven by a cam, rotates at a certain arc, cutting the yarn simultaneously. This design avoids the pulling caused by the cutter cutting directly into the yarn, minimizing yarn breakage during cutting and reducing the frequency of manual splicing.

Description

Technical Field

[0001] This invention relates to the field of yarn cutting technology, specifically to a yarn cutting device for the production of chemical fiber yarns. Background Technology

[0002] Synthetic fiber yarn refers to yarn made from chemical fibers. Due to its advantages such as wear resistance, ease of care, and diverse functions, it has become an indispensable raw material for clothing, home textiles, and high-end industrial textiles. In modern synthetic fiber yarn production and subsequent processing, yarn cutting devices are essential and critical equipment.

[0003] A yarn cutting device for chemical fiber yarn production, with announcement number "CN119100207B", includes: a yarn winding and cutting machine; a winding box is provided on the front of the yarn winding and cutting machine; a set of twisting and cutting mechanisms and a yarn guiding mechanism are provided in the yarn passing area of ​​the winding box; when the amount of yarn wound on the winding paper tube reaches a specified value, the yarn is cut by the yarn guiding mechanism embedded in the twisting and cutting mechanism, and the yarn end away from the winding paper tube is tightened. In this invention, the chemical fiber yarn is tightened during winding, and once the yarn is cut, it will spring back, requiring the worker to re-guide and re-thread the yarn. Therefore, the pusher plate, pusher sub-plate, guide plate, and pressure plate can clamp the yarn, effectively fixing it and preventing the yarn away from the winding paper tube from springing back.

[0004] However, the existing technology and the above-mentioned technology still have the following drawbacks:

[0005] Because the thickness of the produced yarn is not fixed, the tensile force generated at the moment of cutting the finer yarn is negligible. However, the thicker yarn is very easy to be pulled at the moment of cutting, causing the yarn to break. This undoubtedly increases the frequency of connection for the operators. Summary of the Invention

[0006] This invention provides a yarn cutting device for the production of chemical fiber yarns, which solves the problem mentioned in the background art that, due to the inconsistent thickness of the produced yarns, the tensile force generated during the cutting of finer yarns is negligible, but for thicker yarns, the instant of cutting easily causes the yarn to be pulled and broken, which undoubtedly increases the frequency of connection for operators.

[0007] This invention provides the following technical solution: a yarn cutting device for chemical fiber yarn production, comprising a platform and a vertical plate on one side of the platform, a conveying component being provided on the vertical plate, a cutting table being provided below the platform, a cutting component being provided on the cutting table, and a clamping plate being provided below the cutting table that moves synchronously with the cutting component; it also includes a traction component provided above the platform, which conveys the yarn after the cutting component cuts the yarn; and a clamping component provided below the platform, which clamps the yarn while the cutting component is cutting the yarn.

[0008] As an optional embodiment of the yarn cutting device for chemical fiber yarn production described in this invention, the conveying assembly includes a conveying frame installed on one side of the vertical plate, a first guide wheel rotatably mounted on one side of the conveying frame, two sets of second guide wheels symmetrically arranged below the first guide wheel, and an adjusting screw rotatably connected to one side of the conveying frame, the adjusting screw being threadedly connected to the vertical plate.

[0009] As an optional embodiment of the yarn cutting device for chemical fiber yarn production described in this invention, a fixed plate is provided on one side of the upright plate below the conveyor frame, and a third guide wheel and a reversing wheel are rotatably installed between two adjacent sets of fixed plates, and the yarn is sequentially wound around the surfaces of the first guide wheel, the second guide wheel, the third guide wheel and the reversing wheel.

[0010] As an optional embodiment of the yarn cutting device for chemical fiber yarn production described in this invention, the traction assembly includes a first wheel frame and a traction wheel rotatably installed in the first wheel frame. The first wheel frame is slidably connected to the platform. A first cylinder is connected to one side of the first wheel frame. The first cylinder is fixedly installed on the upper surface of the platform. A first sliding groove is provided in the platform. A T-shaped block matching the first sliding groove is provided at the bottom of the first wheel frame.

[0011] As an optional embodiment of the yarn cutting device for chemical fiber yarn production described in this invention, the adjacent traction wheels are connected in series, and one end of each traction wheel is connected to a first motor, which is fixedly installed on one side of the first wheel frame near the outer side of the platform.

[0012] As an optional embodiment of the yarn cutting device for chemical fiber yarn production described in this invention, the clamping assembly includes a second wheel frame and a positioning wheel rotatably installed in the second wheel frame. A second cylinder is provided on one side of the second wheel frame and is connected to the bottom surface of the platform. A second sliding groove is provided at the bottom of the platform, and a T-shaped block matching the second sliding groove is also provided at the top of the second wheel frame.

[0013] As an optional embodiment of the yarn cutting device for chemical fiber yarn production described in this invention, a tensioning assembly is symmetrically arranged between two sets of second wheel frames. The tensioning assembly includes a bracket, and a fixed sleeve is rotatably installed in the bracket via a torsion spring. A connecting plate is connected to one side of the fixed sleeve, and a floating wheel is rotatably connected to the side of the connecting plate away from the fixed sleeve.

[0014] As an optional embodiment of the yarn shearing device for chemical fiber yarn production described in this invention, the shearing assembly includes a cutter slidably mounted in a platform, a blade plate is provided on the shearing table, a cutting groove is formed on the side of the blade plate near the cutter, a threading hole is formed in the shearing table, the threading hole is located between the cutter and the blade plate, a cam is mounted on the shearing table, a camshaft is fixedly connected in the cam, the camshaft is rotatably connected to the shearing table, and a second motor is drivenly connected to the bottom end of the camshaft.

[0015] As an optional embodiment of the yarn shearing device for chemical fiber yarn production described in this invention, the shearing table is provided with a guide groove, the bottom of the cutter is connected to a limiting block that matches the guide groove, the limiting block and the guide groove are in clearance fit, ear plates are symmetrically arranged on one side of the cutter, a fixed shaft is provided on the shearing table, a traction plate is pinned between the ear plate and the fixed shaft, a spring mounting plate is installed on the shearing table, and a first spring is connected between the cutter and the spring mounting plate.

[0016] As an optional embodiment of the yarn cutting device for chemical fiber yarn production described in this invention, wherein: sliders are slidably connected to both sides of the threading hole inside the cutting table, a second spring is connected between the sliders and the cutting table, the clamping plates are symmetrically and slidably connected to the bottom surface of the cutting table, the clamping plates are fitted to one side of the sliders, and guide slopes are provided on opposite sides of the sliders and the clamping plates.

[0017] The present invention has the following beneficial effects:

[0018] 1. This yarn cutting device for chemical fiber yarn production connects the cutter and the cutting table by setting an ear plate, a traction plate and a fixed shaft. It can not only drive the cutter to reset after cutting, but also make the cutter swing around the fixed shaft in a certain arc under the push of the cam. While swinging, the yarn is cut. This setting can avoid the pulling caused by the cutter cutting the yarn directly, and minimize the breakage of the yarn due to cutting, thus reducing the frequency of manual splicing.

[0019] 2. The yarn cutting device for chemical fiber yarn production, by setting a clamping component, uses a second motor to drive the camshaft and cam to rotate, which can push the cutter and the blade to bite together. At the same time, the second cylinder is started to drive the second wheel frame and the positioning wheel in the second wheel frame to move closer to the yarn until the yarn is clamped, so as to prevent the yarn from rebounding when cutting the yarn, and the operator does not need to sort and thread the yarn again.

[0020] 3. The yarn cutting device for chemical fiber yarn production is equipped with a traction component. The first cylinder is activated to drive the first wheel frame to move, so that the two sets of traction wheels are also in contact with and clamped to the yarn. After cutting, the traction wheels are activated to rotate, driving the yarn to continue to be conveyed downwards, which makes it easier for the workers to reconnect the cut yarn to the winding part, thus improving the splicing efficiency after cutting.

[0021] 4. This yarn cutting device for chemical fiber yarn production has a clamping plate installed below the cutting table that moves synchronously with the cutting assembly. When the cutter moves, the cutter pushes the slider to move downwards from the cutting table. Since the slider and the clamping plate have inclined surfaces on opposite sides, the downward movement of the slider can push the clamping plate closer to the yarn, clamping the yarn below the cutter. This ensures that the yarn on both sides of the cutter is clamped simultaneously, preventing the yarn from springing back during cutting and from being torn due to pulling force. This further avoids pulling on thicker yarns during cutting, which could cause the yarn to break, and reduces the frequency of wiring for operators. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from the perspective of the front view.

[0023] Figure 2 This is a front perspective three-dimensional structural diagram of the conveying assembly, clamping assembly, and traction assembly of the present invention.

[0024] Figure 3 This is a side perspective three-dimensional structural diagram of the conveying assembly, clamping assembly, and traction assembly of the present invention.

[0025] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0026] Figure 5 For the present invention Figure 1 Enlarged schematic diagram of the structure at point B.

[0027] Figure 6 For the present invention Figure 1 Enlarged schematic diagram of the structure at point C.

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the present invention viewed from below.

[0029] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point D.

[0030] Figure 9 This is a partial three-dimensional structural diagram of the present invention from a side view.

[0031] In the diagram: 1. Vertical plate; 2. Platform; 3. Conveyor frame; 4. First guide wheel; 5. Second guide wheel; 6. Fixed plate; 7. Third guide wheel; 8. Reversing wheel; 9. First wheel frame; 10. First motor; 11. First cylinder; 12. First chute; 13. Traction wheel; 14. Second cylinder; 15. Positioning wheel; 16. Second chute; 17. Bracket; 18. Fixed sleeve; 19. Torsion spring; 20. Connecting plate; 21. Floating wheel; 22. Shearing table; 23. Cutter; 24. Blade plate; 25. Cutting groove; 26. First spring; 27. Spring mounting plate; 28. Second wheel frame; 29. ​​Ear plate; 30. Traction plate; 31. Fixed shaft; 32. Cam; 33. Camshaft; 34. Second motor; 35. Slider; 36. Second spring; 37. Clamping plate; 38. Guide groove; 39. Adjusting screw; 40. Threading hole. Detailed Implementation

[0032] 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.

[0033] Example 1, please refer to Figures 1 to 9 This invention discloses a yarn cutting device for chemical fiber yarn production, including a platform 2 and a vertical plate 1 on one side of the platform 2. A conveying assembly is provided on the vertical plate 1, including a conveying frame 3 installed on one side of the vertical plate 1. A first guide wheel 4 is rotatably mounted on one side of the conveying frame 3, and two sets of second guide wheels 5 are symmetrically arranged below the first guide wheel 4. An adjusting screw 39 is rotatably connected to one side of the conveying frame 3, and the adjusting screw 39 is threadedly connected to the vertical plate 1. A fixing plate 6 is provided on one side of the vertical plate 1 below the conveying frame 3. A third guide wheel 7 and a reversing wheel 8 are rotatably mounted between two adjacent sets of fixing plates 6. Yarn is sequentially wound around the surfaces of the first guide wheel 4, the second guide wheel 5, the third guide wheel 7, and the reversing wheel 8.

[0034] In this embodiment, a conveying assembly for conveying yarn to the take-up section is provided on one side of the upright plate 1. It includes a conveying frame 3 and a first guide wheel 4 and a second guide wheel 5 inside the conveying frame 3. Two sets of second guide wheels 5 are provided to convey the yarn. At the same time, a fixed plate 6 is provided below the conveying frame 3. A third guide wheel 7 and a reversing wheel 8 are provided inside the fixed plate 6 to convey the yarn. The yarn is in contact with the first guide wheel 4, the second guide wheel 5, the third guide wheel 7 and the reversing wheel 8 in sequence. During the rotation of the first guide wheel 4, the second guide wheel 5, the third guide wheel 7 and the reversing wheel 8, the yarn is conveyed until the amount of yarn wound on the winding paper tube reaches a set value.

[0035] It should be noted that an adjusting screw 39 is rotatably connected to one side of the conveyor frame 3. The adjusting screw 39 is threadedly connected to the vertical plate 1. By rotating the adjusting screw 39, the distance between the conveyor frame 3 and the vertical plate 1 can be adjusted, thereby tensioning the yarn according to the thickness of the yarn, ensuring that the yarn remains taut during the conveying process, so that it can not only fit with each guide wheel, but also will not break due to excessive stretching.

[0036] A shearing table 22 is provided below the platform 2. A shearing assembly is provided on the shearing table 22. The shearing assembly includes a cutter 23 that is slidably installed in the platform 2. A blade 24 is provided on the shearing table 22. A cutting groove 25 is opened on the side of the blade 24 near the cutter 23. A wire hole 40 is opened in the shearing table 22. The wire hole 40 is located between the cutter 23 and the blade 24. A cam 32 is installed on the shearing table 22. A camshaft 33 is fixedly connected in the cam 32. The camshaft 33 is rotatably connected to the shearing table 22. A second motor 34 is driven to the bottom end of the camshaft 33.

[0037] In this embodiment, a shearing table 22 with a cutting groove 25 is provided below the platform 2. A cutter 23 and a blade 24 are provided on the shearing table 22. The blade 24 has a cutting groove 25 that matches the blade edge of the cutter 23. The yarn passes through the thread hole 40. The second motor 34 is started, which drives the camshaft 33 and the cam 32 on the surface of the camshaft 33 to rotate. Using the eccentricity of the cam 32, the cutter 23 is pushed to move on the shearing table 22. After it engages with the cutting groove 25 in the blade 24, the shearing is completed.

[0038] Example 2 is an explanation based on Example 1. For details, please refer to [link / reference]. Figures 1 to 9The shearing table 22 has a guide groove 38. The bottom of the cutter 23 is connected to a limiting block that matches the guide groove 38. The limiting block and the guide groove 38 are in clearance fit. The cutter 23 has ear plates 29 symmetrically arranged on one side. The shearing table 22 is provided with a fixed shaft 31. A traction plate 30 is pinned between the ear plate 29 and the fixed shaft 31. A spring mounting plate 27 is installed on the shearing table 22. A first spring 26 is connected between the cutter 23 and the spring mounting plate 27.

[0039] In this embodiment, the ear plate 29, the traction plate 30 and the fixed shaft 31 are used to enable the cutter 23 to perform a rotary shearing motion, so that the cutter 23 moves closer to the blade plate 24 and engages. At the same time, the first spring 26 connects the cutter 23 and the shearing table 22, which not only drives the cutter 23 to reset after shearing, but also does not limit the movement trajectory of the cutter 23. Under the push of the cam 32, the cutter 23 achieves a certain arc rotation, and shears the yarn while rotating. This setting can avoid the pulling caused by the cutter 23 cutting the yarn directly, and minimize the breakage of the yarn due to shearing, thus reducing the frequency of manual splicing.

[0040] Specifically, the ear plate 29, traction plate 30, and fixed shaft 31 are used to make the cutter 23 swing around the fixed shaft 31, so that the cutter 23 moves closer to the blade plate 24 and engages. At the same time, the first spring 26 connects the cutter 23 and the shearing table 22, which not only drives the cutter 23 to return to its original position after shearing, but also makes the cutter 23 swing with an arc trajectory under the push of the cam 32, shearing the yarn while swinging. This setting can avoid the pulling caused by the cutter 23 cutting the yarn directly, and minimize the breakage of the yarn due to shearing, thus reducing the frequency of manual splicing.

[0041] Example 3 is an explanation based on Example 1. For details, please refer to [link / reference]. Figures 1 to 9 The system includes a clamping assembly located below the platform 2. The clamping assembly clamps the yarn while the shearing assembly is shearing the yarn. The clamping assembly includes a second wheel frame 28 and a positioning wheel 15 rotatably installed in the second wheel frame 28. A second cylinder 14 is provided on one side of the second wheel frame 28. The second cylinder 14 is connected to the bottom surface of the platform 2. A second slide groove 16 is provided at the bottom of the platform 2. A T-shaped block matching the second slide groove 16 is also provided on the top of the second wheel frame 28.

[0042] In this embodiment, a clamping assembly is provided below the platform 2. When the second motor 34 drives the camshaft 33 and the cam 32 to rotate, it can push the cutter 23 and the blade 24 to engage. At the same time, the second cylinder 14 is activated to drive the second wheel frame 28 and the positioning wheel 15 inside the second wheel frame 28 to move closer to the yarn until the yarn is clamped, so as to prevent the yarn from rebounding when cutting the yarn, and the staff does not need to sort and thread the yarn again.

[0043] Tensioning components are symmetrically arranged between the two sets of second wheel frames 28. The tensioning components include a bracket 17. A fixed sleeve 18 is rotatably installed in the bracket 17 via a torsion spring 19. A connecting plate 20 is connected to one side of the fixed sleeve 18. A floating wheel 21 is rotatably connected to the side of the connecting plate 20 away from the fixed sleeve 18.

[0044] In this embodiment, tensioning components are symmetrically arranged between the second wheel frames 28. When the second wheel frames 28 move towards the yarn along the second slide groove 16, the two sets of floating wheels 21 move towards the yarn. Since the floating wheels 21 are connected to one side of the fixed sleeve 18 through the connecting plate 20, and the fixed sleeve 18 is rotatably connected to the bracket 17 through the torsion spring 19, during the process of the floating wheels 21 and the yarn being in contact, the floating wheels 21 are in contact with the yarn and move downward to rub and twist the yarn. This prevents the conveying component from continuously driving the yarn at the moment of clamping the yarn, causing the yarn above the clamping component to curl up. This effectively avoids the subsequent conveying of the yarn being blocked and ensures that the cut yarn is smoothly connected to the take-up part.

[0045] Example 4 is an explanation based on Example 1. For details, please refer to [link / reference]. Figures 1 to 9 It also includes a traction component set above the platform 2. The traction component conveys the yarn after the shearing component cuts the yarn. The traction component includes a first wheel frame 9 and a traction wheel 13 rotatably installed in the first wheel frame 9. The first wheel frame 9 and the platform 2 are slidably connected. A first cylinder 11 is connected to one side of the first wheel frame 9. The first cylinder 11 is fixedly installed on the upper surface of the platform 2. A first groove 12 is opened in the platform 2. A T-shaped block matching the first groove 12 is set at the bottom of the first wheel frame 9.

[0046] In this embodiment, a traction component is provided above the platform 2. The traction component includes a first wheel frame 9 and traction wheels 13 inside the first wheel frame 9. While the second cylinder 14 drives the second wheel frame 28 to move, the first cylinder 11 is activated to drive the first wheel frame 9 to move, so that the two sets of traction wheels 13 also come into contact with and clamp the yarn. After cutting, the traction wheels 13 are activated to rotate, driving the yarn to continue to be conveyed downwards until the worker can easily reconnect the cut yarn to the take-up section.

[0047] It should be noted that the bottom of the first wheel frame 9 is provided with a T-shaped block that matches the first slide groove 12 to ensure the stability of the sliding connection structure between the first wheel frame 9 and the platform 2.

[0048] Adjacent traction wheels 13 are connected in series, and one end of the traction wheel 13 is connected to a first motor 10. The first motor 10 is fixedly installed on one side of the first wheel frame 9 near the outer side of the platform 2.

[0049] In this embodiment, the first motor 10 drives multiple sets of traction wheels 13 connected in series. The first motor 10 and the second motor 34 are electrically connected. After the second motor 34 completes the sequential shearing drive, the first motor 10 can start and drive the traction wheels 13 to rotate. The two sets of traction wheels 13 move relative to each other, which can drive the yarn to be continuously transported.

[0050] Example 5 is an explanation based on Example 1. For details, please refer to [link / reference]. Figures 1 to 9 Below the shearing table 22, there is a clamping plate 37 that moves synchronously with the shearing assembly; inside the shearing table 22, there are sliders 35 slidably connected on both sides of the wire hole 40, and a second spring 36 is connected between the sliders 35 and the shearing table 22. The clamping plate 37 is symmetrically and slidably connected to the bottom surface of the shearing table 22, and the clamping plate 37 is fitted to one side of the slider 35. Guide slopes are opened on opposite sides of the slider 35 and the clamping plate 37.

[0051] In this embodiment, considering that during the above-mentioned cutting process, only the yarn above the cutter 23 is clamped, it is impossible to ensure that the tension force of the yarn on both sides of the cutter 23 is balanced during cutting. Therefore, a clamping plate 37 that moves synchronously with the cutting assembly is provided below the cutting table 22. When the cutter 23 moves, the cutter 23 pushes the slider 35 to move downwards from the cutting table 22. Since the slider 35 and the clamping plate 37 are provided with inclined surfaces on opposite sides, the downward movement of the slider 35 can push the clamping plate 37 to move closer to the yarn, clamping the yarn below the cutter 23. This ensures that the yarn on both sides of the cutter 23 is clamped simultaneously, ensuring that the yarn will not spring back during cutting and will not be torn due to tension. This further avoids pulling on the thicker yarn itself during cutting, causing the yarn to be torn, and reduces the frequency of wiring for the operator.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, goods, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, goods, or apparatus.

[0053] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A yarn cutting device for chemical fiber yarn production, comprising a platform (2) and a vertical plate (1) on one side of the platform (2), wherein a conveying assembly is provided on the vertical plate (1), characterized in that: A shearing plate (22) is provided below the platform (2), a shearing component is provided on the shearing plate (22), and a clamping plate (37) that moves synchronously with the shearing component is provided below the shearing plate (22). It also includes a traction component disposed above the platform (2), which transports the yarn after the shearing component cuts the yarn; It also includes a clamping assembly located below the platform (2), which clamps the yarn while the shearing assembly cuts the yarn; the clamping assembly includes a second wheel frame (28) and a positioning wheel (15) rotatably installed in the second wheel frame (28), a second cylinder (14) is provided on one side of the second wheel frame (28), the second cylinder (14) is connected to the bottom surface of the platform (2), a second slide groove (16) is provided at the bottom of the platform (2), and a T-shaped block matching the second slide groove (16) is also provided on the top of the second wheel frame (28); Tensioning components are symmetrically arranged between the two sets of second wheel frames (28). The tensioning components include a bracket (17). A fixed sleeve (18) is rotatably installed in the bracket (17) via a torsion spring (19). A connecting plate (20) is connected to one side of the fixed sleeve (18). A floating wheel (21) is rotatably connected to the side of the connecting plate (20) away from the fixed sleeve (18). The shearing assembly includes a cutter (23) slidably mounted in the platform (2), a blade plate (24) is provided on the shearing table (22), the blade plate (24) has a cutting groove (25) on the side near the cutter (23), a wire hole (40) is provided in the shearing table (22), the wire hole (40) is located between the cutter (23) and the blade plate (24), a cam (32) is mounted on the shearing table (22), a camshaft (33) is fixedly connected in the cam (32), the camshaft (33) and the shearing table (22) are rotatably connected, the rotation of the cam (32) can push the cutter (23) to move on the shearing table (22), and a second motor (34) is driven to the bottom end of the camshaft (33). The shearing table (22) has a guide groove (38) inside. The bottom of the cutter (23) is connected to a limiting block that matches the guide groove (38). The limiting block and the guide groove (38) are in clearance fit. The cutter (23) has ear plates (29) symmetrically arranged on one side. The shearing table (22) has a fixed shaft (31). A traction plate (30) is pinned between the ear plate (29) and the fixed shaft (31). A spring mounting plate (27) is installed on the shearing table (22). A first spring (26) is connected between the cutter (23) and the spring mounting plate (27). The shearing plate (22) has sliders (35) slidably connected on both sides of the wire hole (40). A second spring (36) is connected between the sliders (35) and the shearing plate (22). The clamping plate (37) is symmetrically and slidably connected to the bottom surface of the shearing plate (22). The clamping plate (37) is fitted to one side of the slider (35). Guide slopes are provided on opposite sides of the slider (35) and the clamping plate (37).

2. The yarn cutting device for chemical fiber yarn production according to claim 1, characterized in that: The conveying assembly includes a conveying frame (3) installed on one side of the upright plate (1). A first guide wheel (4) is rotatably installed on one side of the conveying frame (3). Two sets of second guide wheels (5) are symmetrically arranged below the first guide wheel (4). An adjusting screw (39) is rotatably connected to one side of the conveying frame (3). The adjusting screw (39) is threadedly connected to the upright plate (1).

3. The yarn cutting device for chemical fiber yarn production according to claim 2, characterized in that: A fixing plate (6) is provided on one side of the upright plate (1) below the conveyor frame (3). A third guide wheel (7) and a reversing wheel (8) are rotatably installed between two adjacent sets of fixing plates (6). The yarn is wound around the surface of the first guide wheel (4), the second guide wheel (5), the third guide wheel (7) and the reversing wheel (8) in sequence.

4. The yarn cutting device for chemical fiber yarn production according to claim 1, characterized in that: The traction assembly includes a first wheel frame (9) and a traction wheel (13) rotatably installed in the first wheel frame (9). The first wheel frame (9) and the platform (2) are slidably connected. A first cylinder (11) is connected to one side of the first wheel frame (9). The first cylinder (11) is fixedly installed on the upper surface of the platform (2). A first groove (12) is provided in the platform (2). A T-shaped block matching the first groove (12) is provided at the bottom of the first wheel frame (9).

5. The yarn cutting device for chemical fiber yarn production according to claim 4, characterized in that: The adjacent traction wheels (13) are connected in series, and one end of the traction wheel (13) is connected to a first motor (10). The first motor (10) is fixedly installed on one side of the first wheel frame (9) near the outside of the platform (2).

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