Cut-off mechanism of cotton yarn strips for cotton yarn production

Abstract

The invention discloses a cotton yarn strip cutting mechanism for cotton yarn production, which comprises a base, and is characterized in that a cotton yarn strip cutting assembly is arranged on the base, the cotton yarn strip cutting assembly comprises a straight groove rod, a screw rod, a sliding block, a connecting rod, a cutter, a rotating shaft and a stepping motor, the stepping motor is fixed on the base, and the straight groove rod is fixed on the screw rod. An output shaft of the stepping motor is fixedly connected with the rotating shaft, the rotating shaft is fixedly connected with the lower end of the screw rod, and the two ends of the screw rod are rotationally connected with the two ends of the straight groove rod respectively. The invention relates to the technical field of cotton yarn production equipment, in particular to a cotton yarn strip cut-off mechanism for cotton yarn production, which can cut off a cotton yarn strip, can tension two ends of the cotton yarn strip by simulating a human hand to keep the cotton yarn strip tensioned, and solves the problem that the cotton yarn strip is difficult to cut off due to the fact that the cotton yarn strip cannot be tensioned when being cut off.

Description

Technical Field

[0001] The invention relates to the technical field of cotton yarn production equipment, in particular to a cotton yarn strip cutting mechanism used in cotton yarn production. Background Art

[0002] In the traditional cotton yarn production process, the cutting of cotton yarn usually relies on manual operation or simple mechanical devices, which have problems such as low efficiency, low precision and high labor intensity. Especially in modern industrial production with increasing automation and precision requirements, the existing cotton yarn cutting technology can no longer meet production needs.

[0003] After searching, a cotton yarn cutting mechanism for cotton yarn production with publication number CN219490260U is found, comprising: a cutting table, a plurality of supporting columns are fixedly installed on the bottom surface of the cutting table, each two of the supporting columns form a group, a bottom plate is fixedly installed on the bottom surface of each group of the supporting columns, and a connecting plate is fixedly installed on the top surface of the cutting table; a cutting assembly, which is arranged on one side of the connecting plate.

[0004] The above application can cut and cut the cotton yarn strips fixed on the cutting table by using the U-shaped plate, the cutting table, the threaded rod, the extrusion block, the PLC controller, the motor box, the drive motor, the cutting blade and the electric push rod in coordination with each other, so as to avoid the uneven cutting surface caused by manual cutting of the cotton yarn strips. However, when cutting, since the cotton yarn strips are soft, the cut ends of the cotton yarn strips cannot be tightened, which makes cutting difficult. In addition, when cutting the cotton yarn strips, the cotton yarn strips are displaced downward under the action of the cutting blade, resulting in a poor cutting effect.

[0005] Therefore, it is necessary to develop a new type of cotton yarn cutting mechanism, which can solve the problem of difficulty in cutting the cotton yarn due to the inability to be tensioned by simultaneously cutting both sides of the cotton yarn and simulating human hands to tighten the two ends of the cotton yarn to keep it taut. Summary of the invention

[0006] The main purpose of the present invention is to provide a cotton yarn cutting mechanism for cotton yarn production, which can cut the cotton yarn and keep the two ends of the cotton yarn sliver taut by simulating human hands tightening the slivers to solve the problem of difficulty in cutting the cotton yarn sliver due to the inability to be tensioned.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The cam is a kind of machine-made, and its outer ends are provided with the screw thread, and the screw thread is ...

[0009] A vertical plate is fixed on one side of the base, the vertical plate is a U-shaped plate, a horizontal bar of a T-shaped bar arranged transversely is fixed in the middle of the vertical plate, and the end of the middle vertical bar of the T-shaped bar is fixedly connected to the straight groove bar;

[0010] The cotton yarn cutting component is connected to the cotton yarn auxiliary stretching component and is used for auxiliary stretching of the cotton yarn when cutting.

[0011] As a further definition of the present invention, cotton yarn clamping and conveying assemblies are respectively provided on both sides of the cotton yarn cutting assembly, and the cotton yarn clamping and conveying assemblies are connected to the driving assembly, and the cotton yarn clamping and conveying assemblies include transmission rollers, a driving motor, a driving wheel, a belt and a rotating wheel. The transmission rollers are divided into two groups, and each group of the transmission rollers is horizontally arranged along the same straight line. The two groups of the transmission rollers are arranged one above and one below. One end of each of the transmission rollers is respectively fixedly connected to the driving wheel, and each group of the driving wheels is connected by a belt drive. In each group of the driving wheels, the central axis of one of the driving wheels located at one end is fixedly connected to the output shaft of the driving motor, and the remaining driving wheels in each group of the driving wheels are respectively rotatably connected to the center of the rotating wheel, and the driving motors are respectively fixed on one side of the other rotating wheel, and the rotating wheel is connected to the driving assembly.

[0012] As a further limitation of the present invention, the driving assembly includes an electric push rod, a push rod, a limit block, a guide column, a linear track and an inclined slide groove opened on the vertical plate, the number of the inclined slide grooves is the same as the number of the rotating wheels and is arranged one-to-one with the rotating wheels, the central axis of each rotating wheel passes through the corresponding inclined slide groove, the central axis end of each rotating wheel is fixedly connected to the limit block, the two limit blocks on the same vertical straight line are respectively arranged in the linear track, the middle parts of all the linear tracks are fixedly connected to the push rod, the push rod is fixedly connected to the telescopic rod of the electric push rod, the outer shell of the electric push rod is fixedly connected to the vertical plate, the two ends of each linear track are fixedly connected to the guide column, the middle part of each guide column passes through the push rod, each guide column passes through the corresponding limit block, and each limit block slides with the guide column.

[0013] As a further limitation of the present invention, each group of the transmission rollers is four, each group of the transmission rollers is divided into two pairs and are respectively arranged at both ends of one side of the vertical plate, and the cutter is arranged between the two pairs of the transmission rollers in the horizontal straight direction.

[0014] As a further definition of the present invention, the cotton yarn auxiliary stretching assembly includes a cotton yarn stretching strip, a pressure rod, a gas spring, a fixed rod, a first connecting rod, an extension arm and a second connecting rod. The upper and lower parts of both sides of the straight groove rod are respectively fixedly connected to the extension arms, and the outer end of each extension arm is respectively rotatably connected to one end of a pair of first connecting rods, and the other end of a pair of first connecting rods is respectively rotatably connected to the two ends of the fixed rod. Each of the fixed rods is respectively fixedly connected to one end of the cotton yarn stretching strip, and the two ends of each cotton yarn stretching strip are respectively fixedly connected to the outer shell of the gas spring. The gas springs on the upper and lower sides are symmetrically arranged and the movable ends correspond to each other. The movable end of each gas spring is respectively fixedly connected to one end of the pressure rod.

[0015] As a further definition of the present invention, each pair of the first connecting rods and the extending arms and the fixed rods form a stable parallelogram structure, and the middle part of the first connecting rod in each pair of the first connecting rods close to the side of the straight groove rod is respectively rotationally connected to one end of the second connecting rod, and the other end of each second connecting rod is respectively rotationally connected to the end of the corresponding slider.

[0016] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0017] The stepper motor drives the rotating shaft to rotate, and then drives the screw to rotate, so as to realize the automatic operation of the cotton yarn cutting component. By controlling the rotation of the stepper motor, the movement of the screw can be controlled, and then the position of the slider and the cutter can be controlled to realize the cutting of the cotton yarn.

[0018] The distance between the transmission rollers is controlled by an electric push rod, which is easy to operate and can be quickly adjusted according to the different thicknesses of the cotton yarn, with strong adaptability;

[0019] The setting of the cotton yarn clamping and conveying assembly enables the cotton yarn to be stably clamped and conveyed during the cutting process, reducing production interruptions caused by the sliding or displacement of the cotton yarn;

[0020] The cotton yarn auxiliary stretching component stretches and tensions the cotton yarn during the cutting process, reducing the relaxation and wrinkles of the cotton yarn and facilitating cutting. Accurate cutting and clamping reduce the waste of cotton yarn and improve the utilization rate of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the cutting mechanism of the cotton yarn strip used in the cotton yarn production of the present invention is schematically shown. Figure 1 ;

[0022] Figure 2 The present invention is a cotton yarn cutting mechanism for producing cotton yarn Figure 1 A partial enlarged view of the middle A;

[0023] Figure 3 The structure of the cutting mechanism of the cotton yarn strip used in the cotton yarn production of the present invention is schematically shown. Figure 2 ;

[0024] Figure 4 It is a rear view of a cotton yarn cutting mechanism for cotton yarn production according to the present invention;

[0025] Explanation of reference numerals: 1. Cotton yarn holding and conveying assembly; 101. Transmission roller; 102. Driving motor; 103. Driving wheel; 104. Belt; 105. Rotating wheel; 2. Cotton yarn cutting assembly; 201. Straight groove rod; 202. Screw rod; 203. Sliding block; 204. Connecting rod; 205. Cutter; 206. Rotating shaft; 207. Stepping motor; 3. Cotton yarn auxiliary stretching assembly; 301. Cotton yarn stretching strip; 302. Pressing rod; 303. Gas spring; 304. Fixed rod; 305. First connecting rod; 306. Extending arm; 307. Second connecting rod; 4. Driving assembly; 401. Electric push rod; 402. Pushing rod; 403. Limiting block; 404. Guide column; 405. Linear track; 406. Inclined slide; 5. Vertical plate; 501. T-shaped rod; 6. Base. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] like Figure 1-Figure 4 As shown, this embodiment provides an embodiment of a cotton yarn cutting mechanism for cotton yarn production. In this embodiment, see Figure 1-Figure 3 A cotton yarn cutting mechanism for cotton yarn production includes a base 6, on which a cotton yarn cutting assembly 2 is arranged, and the cotton yarn cutting assembly 2 includes a straight groove rod 201, a screw rod 202, a slider 203, a connecting rod 204, a cutter 205, a rotating shaft 206 and a stepping motor 207. The stepping motor 207 is fixed on the base 6, and the output shaft of the stepping motor 207 is fixedly connected to the rotating shaft 206, and the rotating shaft 206 is fixedly connected to the lower end of the screw rod 202. The two ends of the screw rod 202 are respectively rotatably connected to the straight groove rod 201. The middle part of the screw rod 202 is a smooth round shaft and passes through the middle part of the straight groove rod 201. Slide blocks 203 are respectively arranged in the slide grooves at both ends of the straight groove rod 201. The two ends of the screw rod 202 are respectively provided with threads in opposite directions and are threadedly connected with the slide blocks 203. The outer side of each slide block 203 is respectively fixed with the connecting rod 204. The opposite ends of the two connecting rods 204 are respectively fixedly connected with the cutters 205. The two cutters 205 are arranged opposite to each other, and the two cutters 205 cooperate with each other to cut the cotton yarn strips.

[0028] A vertical plate 5 is fixed on one side of the base 6. The vertical plate 5 is a U-shaped plate. A horizontal bar of a transversely arranged T-shaped bar 501 is fixed in the middle of the vertical plate 5. The middle vertical bar end of the T-shaped bar 501 is fixedly connected to the straight groove bar 201.

[0029] The cotton yarn cutting component 2 is connected to the cotton yarn auxiliary stretching component 3, which is used for auxiliary stretching of the cotton yarn when cutting.

[0030] In this embodiment, a cotton yarn cutting component 2 is provided, which can cut the cotton yarn into segments. The rotating shaft 206 is driven to rotate by the stepper motor 207, thereby driving the screw 202 to rotate. The screw 202 drives the slider 203 to move in the slide groove of the straight groove rod 201. The movement directions of the sliders 203 are opposite. When the two sliders 203 approach each other, the connecting rod 204 and the cutter 205 are driven to approach each other. The two cutters 205 cooperate with each other to achieve the cutting of the cotton yarn.

[0031] Cotton yarn clamping and conveying components 1 are respectively arranged on both sides of the cotton yarn cutting component 2, and the cotton yarn clamping and conveying components 1 are connected to the driving component 4. The cotton yarn clamping and conveying component 1 includes a transmission roller 101, a driving motor 102, a driving wheel 103, a belt 104 and a rotating wheel 105. The transmission roller 101 is divided into two groups, and each group of the transmission rollers 101 is horizontally arranged along the same straight line. The two groups of the transmission rollers 101 are arranged one above and one below. One end of each of the transmission rollers 101 is respectively fixedly connected to the driving wheel 103, and each group of the driving wheels 103 is driven and connected by the belt 104. In each group of the driving wheels 103, the central axis of one of the driving wheels 103 located at one end is fixedly connected to the output shaft of the driving motor 102, and the remaining driving wheels 103 in each group of the driving wheels 103 are respectively rotatably connected to the center of the rotating wheel 105, and the driving motors 102 are respectively fixed on the side of the other rotating wheel 105, and the rotating wheel 105 is connected to the driving component 4.

[0032] Furthermore, the upper transmission roller 101 and the lower transmission roller 101 rotate in opposite directions to realize the transmission of the cotton yarn.

[0033] In this embodiment, a transmission roller 101 is provided to clamp and transmit the cotton yarn strips. The driving motor 102 can drive the driving wheel 103 to rotate. The driving wheel 103 can drive the other driving wheels 103 to rotate through the belt 104. The transmission roller 101 rotates following the driving wheel 103, and the driver can drive the rotating wheel 105 to move, so as to adjust the distance between the transmission rollers 101, so that the transmission roller 101 can adjust the distance according to the different thickness of the cotton yarn strips. The movement of the rotating wheel 105 can drive the driving wheel 103 to move, and then drive the belt 104 and the transmission roller 101 to move.

[0034] The driving assembly 4 includes an electric push rod 401, a push rod 402, a limit block 403, a guide column 404, a linear track 405 and an inclined slide groove 406 opened on the vertical plate 5. The number of the inclined slide grooves 406 is the same as the number of the rotating wheels 105 and is arranged in a one-to-one correspondence with the rotating wheels 105. The central axis of each rotating wheel 105 passes through the corresponding inclined slide groove 406, and the central axis end of each rotating wheel 105 is fixedly connected to the limit block 403. The two limit blocks 403 on the same vertical straight line are respectively arranged on the straight line. In the track 405, the middle parts of all the linear tracks 405 are fixedly connected to the pushing rod 402, the pushing rod 402 is fixedly connected to the telescopic rod of the electric push rod 401, the outer shell of the electric push rod 401 is fixedly connected to the vertical plate 5, and the two ends of each linear track 405 are respectively fixedly connected to the guide column 404, the middle part of each guide column 404 passes through the pushing rod 402, each guide column 404 passes through the corresponding limit block 403, and each limit block 403 slides with the guide column 404.

[0035] In this embodiment, the movement of the telescopic rod of the electric push rod 401 can drive the pushing rod 402 to move. Since the pushing rod 402 is connected to the linear track 405, the linear track 405 can drive the limit block 403 to move under the drive of the pushing rod 402. The limit block 403 can drive the rotating wheel 105 to move along the trajectory of the inclined slide groove 406. Under the limitation of the inclined slide groove 406, the rotating wheel 105 drives the transmission roller 101 to move horizontally and vertically at the same time, so as to adjust the distance between the upper and lower transmission rollers 101. The telescopic rod of the electric push rod 401 is extended, and the distance between the transmission rollers 101 is increased. The telescopic rod of the electric push rod 401 is retracted, and the distance between the transmission rollers 101 is reduced.

[0036] Each group of the transmission rollers 101 has four members, each group of the transmission rollers 101 is divided into two pairs and are respectively arranged at two ends of one side of the vertical plate 5 , and the cutter 205 is arranged between the two pairs of the transmission rollers 101 in the transverse straight line direction.

[0037] In this embodiment, the transmission rollers 101 are divided into two pairs and are respectively arranged at the two ends of one side of the vertical plate 5, so as to realize the clamping and transmission of the cotton yarn strips on both sides, and the cutter 205 cuts the cotton yarn strips.

[0038] The cotton yarn auxiliary stretching component 3 includes a cotton yarn stretching strip 301, a pressure rod 302, a gas spring 303, a fixed rod 304, a first connecting rod 305, an extension arm 306 and a second connecting rod 307. The upper and lower parts of both sides of the straight groove rod 201 are respectively fixedly connected to the extension arms 306, and the outer end of each extension arm 306 is respectively rotatably connected to one end of a pair of the first connecting rods 305, and the other end of a pair of the first connecting rods 305 is respectively rotatably connected to the two ends of the fixed rod 304, and each of the fixed rods 304 is respectively fixedly connected to one end of the cotton yarn stretching strip 301, and the two ends of each cotton yarn stretching strip 301 are respectively fixedly connected to the outer shell of the gas spring 303, and the gas springs 303 on the upper and lower sides are symmetrically arranged and the movable ends correspond to each other, and the movable end of each gas spring 303 is respectively fixedly connected to one end of the pressure rod 302.

[0039] Furthermore, each pair of the first connecting rods 305 and the extending arms 306 and the fixed rods 304 form a stable parallelogram structure, and the middle part of the first connecting rods 305 close to the side of the straight groove rod 201 in each pair of the first connecting rods 305 is respectively rotationally connected to one end of the second connecting rod 307, and the other end of each second connecting rod 307 is respectively rotationally connected to the end of the corresponding slider 203. The parallelogram structure can realize the smooth movement of the pressure rod 302 and the cotton yarn stretching strip 301.

[0040] In this embodiment, by setting the cotton yarn auxiliary stretching component 3, when the cutter 205 cuts the cotton yarn, the two sides of the cotton yarn at the cut position are stretched and tensioned, which facilitates the cutter 205 to cut. When the slider 203 moves, the second connecting rod 307 follows the swing, the second connecting rod 307 drives the first connecting rod 305 to swing, the first connecting rod 305 drives the fixed rod 304 to move, and the fixed rod 304 drives the cotton yarn stretching strip 301 to move downward and away from each other, and the cotton yarn is stretched. The strip drives the pressure rod 302 to clamp the cotton yarn strip. At this time, the two cutters 205 have not yet touched. When the slider 203 continues to move, due to the setting of the gas spring 303, the pressure rod 302 will compress the gas spring 303 without affecting the movement of the cutter 205. In the process of the cutter 205 continuing to approach until the cotton yarn strip is cut, the pressure rods 302 on both sides follow the cotton yarn stretching strip 301 and move away from each other, thereby stretching and tensioning the cotton yarn strip, facilitating the cutting operation of the cutter 205.

[0041] When in use, the cotton strips are passed between the upper and lower transmission rollers 101, and between the upper and lower cutters 205 and the pressure rod 302, the drive assembly 4 is started to drive the transmission roller 101 to clamp the upper and lower sides of the cotton strips, the drive motor 102 is turned on to rotate the drive wheel 103, and then the transmission roller 101 is driven to rotate to transmit the cotton strips. When the cotton strips are transmitted to the position where they need to be cut, the drive motor 102 stops working, stops the transportation of the cotton strips, the cotton strip cutting assembly 2 works, and the cutter 205 cuts the cotton strips. During the cutting process of the cutter 205, the cotton strip auxiliary stretching assembly 3 will assist in the tensioning of the cotton strips to facilitate cutting.

[0042] The specific implementation methods of the invention are described in detail above, but they are only examples, and the invention is not limited to the specific implementation methods described above. For those skilled in the art, any equivalent modification or substitution of the invention is also within the scope of the invention, and therefore, the equalization, modification, improvement, etc. made without departing from the spirit and principle of the invention should be included in the scope of the invention.

Claims

1. A cotton yarn cutting mechanism for cotton yarn production, comprising a base (6), characterized in that: The base (6) is provided with a cotton yarn cutting assembly (2), and the cotton yarn cutting assembly (2) comprises a straight groove rod (201), a screw rod (202), a slider (203), a connecting rod (204), a cutter (205), a rotating shaft (206) and a stepping motor (207). The stepping motor (207) is fixed on the base (6), and the output shaft of the stepping motor (207) is fixedly connected to the rotating shaft (206). The rotating shaft (206) is fixedly connected to the lower end of the screw rod (202). The two ends of the screw rod (202) are rotatably connected to the two ends of the straight groove rod (201). The middle part of the screw rod (202) is a smooth round shaft and passes through the middle part of the straight groove rod (201). Slide blocks (203) are respectively arranged in the slide grooves at both ends of the straight groove rod (201). The two ends of the screw rod (202) are respectively provided with threads in opposite directions and are threadedly connected with the slide blocks (203). The outer side of each slide block (203) is respectively fixed with a connecting rod (204). The opposite ends of the two connecting rods (204) are respectively fixedly connected to the cutters (205). The two cutters (205) are arranged opposite to each other, and the two cutters (205) cooperate with each other to cut the cotton yarn strips. A vertical plate (5) is fixed on one side of the base (6); the vertical plate (5) is a U-shaped plate; a horizontal bar of a transversely arranged T-shaped bar (501) is fixed in the middle of the vertical plate (5); and the end of the middle vertical bar of the T-shaped bar (501) is fixedly connected to the straight groove bar (201); The cotton yarn cutting component (2) is connected to the cotton yarn auxiliary stretching component (3) and is used for auxiliary stretching of the cotton yarn when cutting.

2. A cotton yarn cutting mechanism for cotton yarn production according to claim 1, characterized in that: Cotton yarn clamping and conveying assemblies (1) are respectively arranged on both sides of the cotton yarn cutting assembly (2). The cotton yarn clamping and conveying assemblies (1) are connected to the driving assembly (4). The cotton yarn clamping and conveying assemblies (1) comprise transmission rollers (101), a driving motor (102), a driving wheel (103), a belt (104) and a rotating wheel (105). The transmission rollers (101) are divided into two groups. Each group of transmission rollers (101) is arranged transversely along the same straight line. The two groups of transmission rollers (101) are arranged one above the other. One end of each transmission roller (101) is respectively fixed. The driving wheels (103) are connected, and each group of the driving wheels (103) is connected by a belt (104). In each group of the driving wheels (103), the central axis of one of the driving wheels (103) located at one end is fixedly connected to the output shaft of the driving motor (102). The remaining driving wheels (103) in each group of the driving wheels (103) are respectively rotatably connected to the center of the rotating wheel (105). The driving motors (102) are respectively fixed on one side of the other rotating wheels (105), and the rotating wheels (105) are connected to the driving assembly (4).

3. A cotton yarn cutting mechanism for cotton yarn production according to claim 2, characterized in that: The driving assembly (4) comprises an electric push rod (401), a push rod (402), a limit block (403), a guide column (404), a linear track (405) and an inclined slide groove (406) provided on the vertical plate (5); the number of the inclined slide grooves (406) is the same as the number of the rotating wheels (105) and is arranged in a one-to-one correspondence with the rotating wheels (105); the central axis of each rotating wheel (105) passes through the corresponding inclined slide groove (406); the central axis end of each rotating wheel (105) is fixedly connected to the limit block (403); the two limit blocks (403) on the same vertical straight line are respectively arranged on the straight line. In the linear track (405), the middle parts of all the linear tracks (405) are fixedly connected to the pushing rod (402), the pushing rod (402) is fixedly connected to the telescopic rod of the electric push rod (401), the shell of the electric push rod (401) is fixedly connected to the vertical plate (5), and the two ends of each linear track (405) are respectively fixedly connected to the guide column (404), the middle part of each guide column (404) passes through the pushing rod (402), each guide column (404) passes through the corresponding limit block (403), and each limit block (403) is slidably matched with the guide column (404).

4. A cotton yarn cutting mechanism for cotton yarn production according to claim 3, characterized in that: Each group of the transmission rollers (101) comprises four transmission rollers, each group of the transmission rollers (101) is divided into two pairs and respectively arranged at two ends of one side of the vertical plate (5), and the cutting knife (205) is arranged between the two pairs of transmission rollers (101) in the transverse straight line direction.

5. A cotton yarn cutting mechanism for cotton yarn production according to claim 2, characterized in that: The cotton yarn auxiliary stretching assembly (3) comprises a cotton yarn stretching strip (301), a pressure rod (302), a gas spring (303), a fixed rod (304), a first connecting rod (305), an extension arm (306) and a second connecting rod (307). The upper and lower parts of both sides of the straight groove rod (201) are respectively fixedly connected to the extension arms (306). The outer end of each extension arm (306) is respectively rotatably connected to one end of a pair of the first connecting rods (305). The pair of the first connecting rods The other end of (305) is rotatably connected to the two ends of the fixed rod (304), each of the fixed rods (304) is fixedly connected to one end of the cotton yarn stretching strip (301), and the two ends of each cotton yarn stretching strip (301) are fixedly connected to the outer shell of the gas spring (303), the gas springs (303) on the upper and lower sides are symmetrically arranged and the movable ends correspond to each other, and the movable end of each gas spring (303) is fixedly connected to one end of the pressure rod (302).

6. A cotton yarn cutting mechanism for cotton yarn production according to claim 5, characterized in that: Each pair of the first connecting rods (305), the extending arms (306) and the fixed rods (304) form a stable parallelogram structure, and the middle part of the first connecting rods (305) close to the straight groove rod (201) in each pair of the first connecting rods (305) is respectively rotationally connected to one end of the second connecting rod (307), and the other end of each second connecting rod (307) is respectively rotationally connected to the end of the corresponding slider (203).

Images