Swing traction device of flat filament weft winding drum

Abstract

The utility model belongs to the technical field of swinging traction of a plastic flat filament winding drum, and discloses a swinging traction device of a flat filament weft winding drum, a driving mechanism is installed at the middle position, close to the front side, of a support, and a winding drum is installed at the right side position of the driving mechanism; the tensioning rod is fixedly arranged on the upper portion of the rear side of the support. The swing traction mechanism is fixedly arranged at the upper position of the rear side of the winding drum, and the left end of the swing traction mechanism is fixedly connected with the right side face of the support. The utility model has the beneficial effects that the swinging traction stability of the plastic flat filament is improved, the problem that the swinging traction speed of the swinging traction mechanism and the rotating speed of the winding drum are difficult to match with the speed control proportion required by the winding process of the plastic flat filament is solved, and the plastic flat filament is uniformly and compactly wound on the winding drum.

Description

Technical Field

[0001] This utility model belongs to the field of swing traction technology for plastic flat yarn take-up drums, specifically relating to a swing traction device for a flat yarn weft take-up drum. Background Technology

[0002] Polypropylene granules are melted at high temperatures using a drawing machine and extruded into a plastic film using a die. The film is then cooled, shaped, and cut into plastic flat yarns. These flat yarns are then wound onto a winding drum and used as the weft yarn in a circular loom. The weft and warp yarns are woven together on the circular loom to form a cylindrical plastic base fabric. This cylindrical plastic base fabric is the raw material for producing FIBCs (Flexible Intermediate Bulk Containers).

[0003] Plastic flat yarn is wound as weft onto a take-up drum. To ensure even winding, a yarn guide is typically used. The lateral reciprocating movement of the yarn guide synchronizes with the rotation of the take-up drum, achieving uniform winding of the plastic flat yarn. Patent application number CN201310535625.3, entitled "Yarn Guide and Yarn Winding Machine," discloses "a linear guide rail and a sliding member located on the linear guide rail, the sliding member being movable on the linear guide rail, the surface of the sliding member having a soft magnetic material; three mutually spaced drive devices, separated from the linear guide rail and the sliding member, each drive device connected to an electromagnet, the electromagnet being driven by the connected drive device to move along the extension direction of the linear guide rail; a control device for controlling the three electromagnets to alternately energize and de-energize, the electromagnets being attracted to the sliding member when energized, and driving the sliding member to reciprocate on the linear guide rail under the drive of the drive devices." This essentially discloses the structure of a linear motor, utilizing electromagnetic force to achieve lateral reciprocating movement of the yarn.

[0004] Patent application number CN202410399157.X, entitled "A Plastic Flat and Round Wire Winding and Rewinding Mechanism and Method," discloses that "the correction component includes a drive component, a detection component, a braking component, and an adjustment component. The drive component includes a moving cylinder, and two clamping plates are fixedly connected to the end of the moving cylinder. When the moving cylinder moves, it can move the two clamping plates, and the two clamping plates slide on a smooth rod. The detection component includes a roller, which is located between the two clamping plates. The roller can slide on the smooth rod, and the movement of the two clamping plates can drive the roller to move."

[0005] The two patents mentioned above address different issues. One patent uses a linear motor (magnetic force) to cause the yarn to swing back and forth laterally, while the other uses a drive screw and a guide rod to move the moving drum laterally, thus achieving the traction of the plastic flat yarn. The main technical problems with these two patents are: during the lateral movement, an encoder or sensor is needed to detect the position; in the first patent, the initial acceleration of the magnetic force is too fast, leading to unstable lateral movement speed of the yarn; in the second patent, the speed of the drive screw engaging with the moving drum is limited, and when the take-up drum rotates at high speed, the speed of the drive screw and moving drum needs to be matched with the speed control ratio required for the plastic flat yarn winding process. Based on these shortcomings in the prior art, the inventor has developed a swinging traction device for a flat yarn weft take-up drum, which effectively solves the aforementioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a swing traction device for flat yarn weft winding drum. This utility model has a simple structure and a scientific and reasonable design. This utility model can solve the problem in the prior art that the lateral movement speed of the yarn is unstable due to the fast initial acceleration of the magnetic force. At the same time, it also solves the problem that the speed of the meshing transmission between the drive screw and the moving drum is difficult to match with the speed control ratio required by the plastic flat yarn winding process.

[0007] The technical solution adopted in this utility model is as follows: a swing traction device for a flat yarn weft winding drum, including a bracket, a winding drum, and a drive mechanism. The bracket is T-shaped, the drive mechanism is installed near the middle of the front side of the bracket, and the winding drum is installed on the right side of the drive mechanism. A tension rod is fixedly installed on the upper rear side of the bracket, extending to the right side and flush with the winding drum. The tension rod includes a fixed seat, which is fixed to the upper right rear side of the bracket, and a smooth rod is fixed at the center of the fixed seat, with the smooth rod and the center of the fixed seat being concentric. The swing traction mechanism is fixedly installed on the upper rear side of the winding drum, and the left end of the swing traction mechanism is fixedly connected to the right side of the bracket. The swing traction mechanism is used to swing the plastic flat yarn back and forth laterally, so that the plastic flat yarn is evenly and densely wound on the winding drum under the condition of the winding drum rotation.

[0008] The drive mechanism includes a drive motor, which is fixedly mounted on the left side of the bracket. A bearing is mounted on the body of the bracket corresponding to the drive motor. The power output shaft of the drive motor is fixed to the inner ring of the bearing. A rotating shaft passes through the center of the end cover and is fixedly connected to the power output shaft of the drive motor. The end cover is fixedly mounted on the right side of the bracket. A winding drum is mounted on the right end of the rotating shaft and is fixed with a nut.

[0009] The swing traction mechanism includes an upper cover and a hollow housing with a circular lower part and a square opening at the top. The upper cover is fitted onto the upper part of the housing. Mounting columns are symmetrically fixed on the left side of the housing near the upper part, with the left end face of the mounting column fixedly connected to the right side of the bracket. A cylindrical fixing column is horizontally installed through the housing near the lower part, used to mount and fix a sliding plate, which is horizontally fixed to the middle of the front side of the fixing column. An upper rack is fixedly installed on the upper rear side of the sliding plate, and a lower rack is correspondingly fixed on the lower part of the upper rack, fixed to the rear side of the sliding plate. A sliding bearing is located on the upper part of the sliding plate, and a gear is located on the rear side of the sliding bearing. The front end of the meshing shaft is fixedly installed in the inner ring of the sliding bearing, and the gear is fixedly installed on the meshing shaft on the rear side of the sliding bearing. The rear end of the meshing shaft is fixed... The push plate is fixedly installed in the mounting hole on the right side of the push plate; the push plate is located behind the upper and lower racks, and the left end of the push plate extends to the left side through the left end of the fixed column. Mounting holes are opened at both ends of the push plate; the rotating plate is located at the front left end of the push plate, and through holes are opened at both ends of the rotating plate; the hinge shaft passes through the mounting hole at the front end of the push plate and the through hole at the right end of the rotating plate to connect the push plate and the rotating plate together; the fixed plate is fixedly located on the left side of the housing, the stepper motor is installed at the upper left front side of the fixed plate, the front end of the rotating shaft passes through the rear left side of the fixed plate and is fixedly connected to the power output shaft of the stepper motor, and the rear end of the rotating shaft is fixed to the through hole at the front end of the rotating plate; the rear end of the traction rod is fixedly located at the front end of the meshing shaft in the inner ring of the sliding bearing, and the traction ring is fixedly located at the upper front end of the traction rod. The front end of the traction rod is bent and inclined.

[0010] The housing includes a housing body, with a slot opened on the front side of the housing body near the upper part, and the height of the slot is greater than the height of the winding drum; the traction rod passes through the slot and extends to the front side of the housing body.

[0011] The fixed column includes a fixed column body, a fixed groove is provided in the middle of the front side of the fixed column body, and a telescopic opening is provided in the upper left rear side of the fixed groove. The telescopic opening is used to allow the push plate to pass through the fixed column body and move left and right; the sliding plate is fixed in the middle of the front side of the fixed groove.

[0012] The left end of the push plate extends through the telescopic opening to the left side of the fixed column body, and a gap is provided between the push plate and the rear side of the fixed groove.

[0013] The sliding plate includes a sliding plate body, which is rectangular in shape. A sliding groove is formed on the upper side of the sliding plate body and is elongated in shape. A slide rail is formed on the upper surface of the sliding groove and is elongated in shape.

[0014] The teeth of the upper rack and the lower rack are arranged symmetrically, with the top surface of the upper rack tooth flush with the upper surface of the sliding groove, and the top surface of the lower rack tooth flush with the lower surface of the sliding groove; the upper rack, the lower rack and the sliding plate body are of equal length.

[0015] The sliding bearing is installed in the slide rail in the sliding groove, and the sliding bearing rolls freely back and forth in the slide rail.

[0016] The speed at which the sliding bearing driven by the push plate rolls back and forth on the slide rail is controlled to be between 1:10 and 1:20 (i.e., the speed control relationship between the stepper motor and the drive motor).

[0017] The drive motor and stepper motor are fixedly connected to the frequency converter via signal transmission lines. The frequency converter is used to control the drive motor and stepper motor to match the rotational speed of the push plate driving the sliding bearing to roll back and forth on the slide rail with the rotational speed of the winding drum according to the set rotational speed relationship.

[0018] The working process of this oscillating traction device for flat yarn weft winding drum is as follows: First, the operator draws the plastic flat yarn from the drawing and forming equipment, passes it through the upper part of the tension rod, and simultaneously passes it through the traction ring on the traction rod, pre-winding it once on the winding drum. Then, the drive motor and stepper motor of the drive mechanism are turned on. The rotation of the drive motor drives the rotating shaft to rotate, which in turn drives the winding drum to rotate. At this time, the rotation of the stepper motor drives the rotating shaft to rotate, which in turn drives the rotating plate to rotate. Under the action of the rotation of the rotating plate, the push plate produces a linear motion in the left and right direction through the hinge shaft. Furthermore, under the linear back-and-forth motion of the push plate, the linear meshing of the gear with the upper and lower racks drives the sliding bearing to swing left and right along the slide rail of the sliding plate. Finally, the plastic flat yarn in the traction ring on the traction rod swings left and right in a linear manner. Using the rotational speed control relationship of the stepper motor and drive motor preset by the frequency converter, the push plate drives the sliding bearing to run at a speed that matches the back-and-forth rolling speed of the slide rail and the rotational speed of the winding drum, so that the plastic flat yarn is evenly and densely wound on the winding drum.

[0019] The beneficial effects of this utility model are as follows: by setting up a take-up drum, a drive mechanism, a tensioning rod and a swing traction mechanism, the stability of the swing traction of plastic flat wire is improved, and the problem of the swing traction speed of the swing traction mechanism and the rotation speed of the take-up drum being difficult to match with the speed control ratio required by the plastic flat wire winding process is solved, so as to realize that the plastic flat wire is evenly and densely wound on the take-up drum. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2This is a schematic diagram of the structure of the winding drum and drive mechanism of this utility model;

[0022] Figure 3 This is a cross-sectional view of the swing traction mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the swing traction mechanism of this utility model;

[0024] Figure 5 This is a front view structural diagram of the swing traction mechanism of this utility model;

[0025] Figure 6 This is a rear-view structural diagram of the swing traction mechanism of this utility model;

[0026] Markings in the diagram: 1. Bracket; 2. Rewind drum; 3. Drive mechanism; 31. Drive motor; 32. Bearing; 33. End cap; 34. Rotating shaft; 4. Tensioning rod; 41. Fixing seat; 42. Smooth rod; 5. Swinging traction mechanism; 51. Top cover; 52. Housing; 521. Housing body; 522. Groove; 53. Mounting column; 54. Fixing column; 541. Fixing column body; 542. Telescopic port; 543. Fixing groove; 5 5. Sliding plate; 551. Sliding plate body; 552. Sliding groove; 553. Slide rail; 56. Upper rack; 57. Lower rack; 58. Sliding bearing; 59. Gear; 510. Meshing shaft; 511. Push plate; 512. Mounting hole; 513. Hinge shaft; 514. Rotating plate; 515. Through hole; 516. Fixing plate; 517. Stepper motor; 518. Rotating shaft; 519. Traction rod; 5110. Traction ring. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0028] This utility model provides a swing traction device for flat yarn weft winding drum:

[0029] like Figure 1 , 2 As shown, the drive mechanism 3 is installed near the front center of the bracket 1, and the take-up drum 2 is installed on the right side of the drive mechanism 3. The drive mechanism 3 includes a drive motor 31, which is fixedly installed on the left side of the bracket 1. A bearing 32 is installed on the body of the bracket 1 corresponding to the drive motor 31. The power output shaft of the drive motor 31 is fixed to the inner ring of the bearing 32. The rotating shaft 34 passes through the center of the end cover 33 and is fixedly connected to the power output shaft of the drive motor 31. The end cover 33 is fixedly installed on the right side of the bracket 1. The take-up drum 2 is installed on the right end of the rotating shaft 34 and is fixed with a nut.

[0030] The aforementioned drive motor 31 of the drive mechanism 3 rotates, causing the rotating shaft 34 to rotate, which in turn causes the take-up drum 2 to rotate. The take-up drum 2 is mounted on the right side of the rotating shaft 34 and secured with a nut. The main purpose of this is twofold: firstly, to fix the take-up drum 2, thus limiting its position; and secondly, to improve the stability of the take-up drum 2's rotation and effectively prevent it from falling off.

[0031] like Figure 1 As shown, the tension rod 4 is fixedly installed at the upper rear side of the bracket 1, extending to the right side and flush with the take-up drum 2. The tension rod 4 includes a fixing seat 41, which is fixed to the upper right rear side of the bracket 1. A smooth rod 42 is fixed at the center of the fixing seat 41, and the center of the smooth rod 42 is concentric with the center of the fixing seat 41. By using the tension rod 4, the height difference between the tension rod 4, the swing traction mechanism 5, and the take-up drum 2 can achieve a gradient tension effect on the plastic flat yarn. On the one hand, this improves the uniformity of the plastic flat yarn winding on the take-up drum 2; on the other hand, it improves the density of the plastic flat yarn winding on the take-up drum.

[0032] like Figure 1 As shown, the swing traction mechanism 5 is fixedly installed at the upper rear side of the take-up drum 2. The left end of the swing traction mechanism 5 is fixedly connected to the right side of the bracket 1. The swing traction mechanism 5 is used to swing the plastic flat wire back and forth laterally, so that the plastic flat wire can be evenly and densely wound on the take-up drum 2 under the condition of rotating the take-up drum 2.

[0033] With the above-mentioned arrangement of the swing traction mechanism 5, drive mechanism 3 and take-up drum 2, under the condition that the swing traction speed of the swing traction mechanism 5 and the rotation speed of the take-up drum 2 are controlled at a ratio of 1:10 to 1:20, the push plate 511 drives the sliding bearing 58 to run at a speed that matches the rotation speed of the take-up drum 2, so that the plastic flat wire is evenly and densely wound on the take-up drum 2.

[0034] like Figure 1 , 3 As shown, the housing 52 is hollow with a circular lower part and a square opening at the top. The upper cover 51 is fitted and installed at the upper part of the housing 52. The housing 52 includes a housing body 521. A slot 522 is opened on the front side of the housing body 521 near the upper part. The height of the slot 522 is greater than the height of the winding drum 2. The traction rod 519 extends through the slot 522 to the front side of the housing body 521.

[0035] The aforementioned housing 52, housing body 521, and slot 522 serve two purposes. First, the housing body 521 provides protection for the sliding groove 552, slide rail 553, upper rack 56, lower rack 57, sliding bearing 58, and gear 59 of the sliding plate 55, preventing external dust from entering the housing body 521 and thus reducing the linear oscillation performance of the sliding groove 552, slide rail 553, upper rack 56, lower rack 57, sliding bearing 58, and gear 59. Second, it provides a fixed installation and support for the fixed column 54.

[0036] like Figure 1 As shown, the mounting posts 53 are symmetrically fixedly arranged on the left side of the housing 52 near the upper part, and the left end face of the mounting posts 53 is fixedly connected to the right side face of the bracket 1. The two symmetrically arranged mounting posts 53 can fix the housing 52 to the right side face of the bracket 1, thus providing fixed support for the housing 52.

[0037] like Figure 3 , 4 As shown, the fixing post 54 is cylindrical and is installed horizontally through the housing 52 near the lower part. The fixing post 54 is used to install and fix the sliding plate 55. The fixing post 54 includes a fixing post body 541. A fixing groove 543 is opened in the middle of the front side of the fixing post body 541. A telescopic opening 542 is opened in the upper left rear side of the fixing groove 543. The telescopic opening 542 is used to allow the push plate 511 to pass through the fixing post body 541 and move left and right. The sliding plate 55 is fixed in the middle of the front side of the fixing groove 543.

[0038] The aforementioned fixed groove 543 provides space for the installation of the sliding plate 55 and also provides space for the left and right linear movement of the push plate 511.

[0039] With the telescopic opening 542, the stepper motor 517 rotates, driving the rotating shaft 518 to rotate. The rotating shaft 518 then drives the rotating plate 514 to rotate. Under the rotation of the rotating plate 514, the push plate 511 moves linearly in the left and right direction through the hinge shaft 513. The push plate 511 then passes through the fixed column 54. With the meshing of the gear 59, the upper rack 56, and the lower rack 57, the sliding bearing 58 swings linearly left and right.

[0040] like Figure 3 , 4 As shown in Figures 5 and 6, the sliding plate 55 is horizontally fixed at the middle position of the front side of the fixed column 54. The moving plate 55 includes a sliding plate body 551, which is rectangular in shape. A sliding groove 552 is opened on the upper side of the sliding plate body 551 and is elongated in shape. A slide rail 553 is opened on the upper surface inside the sliding groove 552 and is elongated in shape.

[0041] By setting a sliding groove 552 and a slide rail 553 on the sliding plate body 551, the sliding bearing 58 moves back and forth on the push plate 511, and at the same time, under the meshing of the gear 59, the upper rack 56 and the lower rack 57, the sliding bearing 58 produces a left-right linear swinging motion in the slide rail 553 of the sliding groove 552; on the one hand, it improves the stability of the linear left-right swinging of the traction rod 519, and on the other hand, it plays a limiting role in the linear movement of the sliding bearing 58.

[0042] like Figure 3 , 4 As shown in Figures 5 and 6, the upper rack 56 is fixedly mounted on the upper rear side of the sliding plate 55, and the lower rack 57 is fixedly mounted on the lower side of the upper rack 56. The lower rack 57 is fixed to the rear side of the sliding plate 55. The sliding bearing 58 is mounted on the upper part of the sliding plate 55, and the gear 59 is mounted on the rear side of the sliding bearing 58. The front end of the meshing shaft 510 is fixedly mounted in the inner ring of the sliding bearing 58, and the gear 59 is fixedly mounted on the meshing shaft 510 on the rear side of the sliding bearing 58. The rear end of the meshing shaft 510 is fixedly mounted in the right mounting hole 512 of the push plate 511.

[0043] The aforementioned arrangement of gear 59, upper rack 56, lower rack 57, and meshing shaft 510, under the condition that the push plate 511 moves linearly left and right, drives the meshing shaft 510 to move linearly left and right. At the same time, under the meshing cooperation of gear 59, upper rack 56, and lower rack 57, on the one hand, the stability of linear swing traction of sliding bearing 58, traction rod 519, and traction ring 5110 is improved, and on the other hand, precise linear traction swing of sliding bearing 58, traction rod 519, and traction ring 5110 is realized, providing sufficient and necessary conditions for the uniform and dense winding of plastic flat wire onto the take-up drum 2.

[0044] like Figure 3 , 4 As shown in Figures 5 and 6, the push plate 511 is located behind the upper rack 56 and the lower rack 57. The left end of the push plate 511 extends to the left side through the left end of the fixing post 54. Mounting holes 512 are provided at both ends of the push plate 511. The rotating plate 514 is located at the front left end of the push plate 511. Through holes 515 are provided at both ends of the rotating plate 514. The hinge shaft 513 passes through the mounting hole 512 at the front end of the push plate 511 and the through hole 515 at the right end of the rotating plate 514 to connect the push plate 511 and the rotating plate 514 together. The fixing plate 516 is fixedly located on the left side of the housing 52. The stepper motor 517 is installed on the upper left front side of the fixing plate 516. The front end of the rotating shaft 518 passes through the rear left side of the fixing plate 516 and is fixedly connected to the power output shaft of the stepper motor 517. The rear end of the rotating shaft 518 is fixed to the front through hole 515 of the rotating plate 514.

[0045] The main purpose of the above configuration is as follows: the stepper motor 517 rotates, driving the rotating shaft 518 to rotate, and the rotating shaft 518 drives the rotating plate 514 to rotate. Under the rotation of the rotating plate 514, the push plate 511 produces a linear motion in the left and right direction through the hinge shaft 513. Furthermore, driven by the linear back-and-forth motion of the push plate 511, the linear meshing of the gear 59 with the upper rack 56 and the lower rack 57 is used to push the sliding bearing 58 to swing left and right linearly along the slide rail 553 of the sliding groove 552 of the sliding plate 55. On the one hand, it provides a driving force for the linear left and right movement of the sliding bearing 58 in the slide rail 553; on the other hand, under the condition that the stepper motor 517 rotates, driving the rotating shaft 518 to rotate, and the rotating shaft 518 drives the rotating plate 514 to rotate, the rotational motion is converted into the linear movement motion of the push plate 511.

[0046] like Figure 4 , 5 As shown in Figure 6, the teeth of the upper rack 56 and the lower rack 57 are arranged symmetrically, with the top surface of the upper rack 56 tooth flush with the upper surface of the sliding groove 552, and the top surface of the lower rack 57 tooth flush with the lower surface of the sliding groove 552; the upper rack 56, the lower rack 57 and the sliding plate body 551 are of equal length.

[0047] The main purpose of the above arrangement is to provide a meshing surface with high meshing accuracy for the linear movement meshing of gear 59, and to improve the stability of the traction swing of traction rod 519 and traction ring 5110.

[0048] like Figure 1 As shown, the speed at which the sliding bearing 58, driven by the push plate 511, rolls back and forth in the slide rail 553 is controlled to be in a ratio of 1:10 to 1:20 with respect to the rotational speed of the take-up drum 2. For example, when the rotational speed of the take-up drum 2 is 300 revolutions per minute, the speed at which the sliding bearing 58, driven by the push plate 511, rolls back and forth in the slide rail 553 should be controlled to be 15 to 30 times per minute.

[0049] In this invention, by utilizing the speed control ratio of the drive motor 31 and the stepper motor 517 preset by the frequency converter, the plastic flat filaments can be uniformly and densely wound onto the take-up drum 2. The frequency converter mentioned herein falls within the scope of existing technology; therefore, the applicant will not elaborate further on the working principle and control method of the frequency converter.

[0050] like Figure 1-6As shown, the working process of this oscillating traction device for flat yarn weft winding drum is as follows: First, the operator draws the plastic flat yarn from the drawing and forming equipment, passes it through the upper part of the tension rod 4, and simultaneously passes it through the traction ring 5110 on the traction rod 519, pre-winding it once on the winding drum 2; then, the drive motor 31 and stepper motor 517 of the drive mechanism 3 are turned on. The rotation of the drive motor 31 drives the rotation shaft 34 to rotate, which in turn causes the winding drum 2 to rotate. At this time, the stepper motor 517 rotates, which drives the rotation shaft 518 to rotate. The rotation shaft 518 drives the rotation plate 514 to rotate. Under the rotation of the rotation plate 514, the push plate 511 moves left and right through the hinge shaft 513. The linear motion of the push plate 511, driven by the linear back-and-forth motion of the push plate 511, utilizes the linear meshing of the gear 59 with the upper rack 56 and the lower rack 57 to drive the sliding bearing 58 to swing left and right along the slide rail of the sliding groove 552 of the sliding plate 55. This ultimately achieves the left and right linear swing of the plastic flat wire in the traction ring 5110 on the traction rod 519. By utilizing the rotational speed control relationship of the stepper motor 517 and the drive motor 31 preset by the frequency converter, the push plate 511 drives the sliding bearing 58 to run at a speed that matches the back-and-forth rolling speed of the slide rail 553 and the rotational speed of the take-up drum 2, so that the plastic flat wire is evenly and densely wound on the take-up drum 2.

[0051] Various modifications to the above embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A swing traction device for a flat yarn weft winding drum, comprising a support, a winding drum, and a drive mechanism, wherein the support is T-shaped, and the drive mechanism is installed near the middle of the front side of the support, characterized in that: The take-up drum is installed on the right side of the drive mechanism; the tension rod is fixedly installed on the upper rear side of the bracket, extending to the right side and flush with the take-up drum; the tension rod includes a fixed seat, which is fixed to the upper right rear side of the bracket, and the guide rod is fixed at the center of the fixed seat, with the guide rod and the center of the fixed seat being concentric; the swing traction mechanism is fixedly installed on the upper rear side of the take-up drum, and the left end of the swing traction mechanism is fixedly connected to the right side of the bracket. The swing traction mechanism is used to swing the plastic flat yarn back and forth laterally, so that the plastic flat yarn can be evenly and densely wound on the take-up drum under the condition of the take-up drum rotation.

2. A swinging pull device for a flat filament weft thread take-up drum according to claim 1, characterized in that The drive mechanism includes a drive motor, which is fixedly mounted on the left side of the bracket. A bearing is mounted on the body of the bracket corresponding to the drive motor. The power output shaft of the drive motor is fixed to the inner ring of the bearing. A rotating shaft passes through the center of the end cover and is fixedly connected to the power output shaft of the drive motor. The end cover is fixedly mounted on the right side of the bracket.

3. A swinging pull device for a flat filament weft thread take-up drum according to claim 1, characterized in that: The swing traction mechanism includes an upper cover and a hollow housing with a circular lower part and a square opening at the top. The upper cover is fitted onto the upper part of the housing. Mounting columns are symmetrically fixed on the left side of the housing near the upper part, with the left end face of the mounting column fixedly connected to the right side of the bracket. A cylindrical fixing column is horizontally installed through the housing near the lower part, used to mount and fix a sliding plate, which is horizontally fixed to the middle of the front side of the fixing column. An upper rack is fixedly installed on the upper rear side of the sliding plate, and a lower rack is correspondingly fixed on the lower part of the upper rack, fixed to the rear side of the sliding plate. A sliding bearing is located on the upper part of the sliding plate, and a gear is located on the rear side of the sliding bearing. The front end of the meshing shaft is fixedly installed in the inner ring of the sliding bearing, and the gear is fixedly installed on the meshing shaft on the rear side of the sliding bearing. The rear end of the meshing shaft is fixed... The push plate is fixedly installed in the mounting hole on the right side of the push plate; the push plate is located behind the upper and lower racks, and the left end of the push plate extends to the left side through the left end of the fixed column. Mounting holes are opened at both ends of the push plate; the rotating plate is located at the front left end of the push plate, and through holes are opened at both ends of the rotating plate; the hinge shaft passes through the mounting hole at the front end of the push plate and the through hole at the right end of the rotating plate to connect the push plate and the rotating plate together; the fixed plate is fixedly located on the left side of the housing, the stepper motor is installed at the upper left front side of the fixed plate, the front end of the rotating shaft passes through the rear left side of the fixed plate and is fixedly connected to the power output shaft of the stepper motor, and the rear end of the rotating shaft is fixed to the through hole at the front end of the rotating plate; the rear end of the traction rod is fixedly located at the front end of the meshing shaft in the inner ring of the sliding bearing, and the traction ring is fixedly located at the upper front end of the traction rod. The front end of the traction rod is bent and inclined.

4. A swinging drawing device for a flat filament weft thread take-up drum according to claim 3, characterized in that: The housing includes a housing body, with a slot opened on the front side of the housing body near the upper part, and the height of the slot is greater than the height of the winding drum; the traction rod passes through the slot and extends to the front side of the housing body.

5. A swinging pull device for a flat filament weft thread take-up drum according to claim 3, characterized in that: The fixed column includes a fixed column body, a fixed groove is provided in the middle of the front side of the fixed column body, and a telescopic opening is provided in the upper left rear side of the fixed groove. The telescopic opening is used to allow the push plate to pass through the fixed column body and move left and right; the sliding plate is fixed in the middle of the front side of the fixed groove.

6. The swing traction device for a flat yarn weft winding drum according to claim 3, characterized in that: The left end of the push plate extends through the telescopic opening to the left side of the fixed column body, and a gap is provided between the push plate and the rear side of the fixed groove.

7. A swinging pull device for a flat silk weft winding drum according to claim 3, characterized in that: The sliding plate includes a sliding plate body, which is rectangular in shape. A sliding groove is formed on the upper side of the sliding plate body and is elongated in shape. A slide rail is formed on the upper surface of the sliding groove and is elongated in shape.

8. A swinging pull device for a flat silk weft winding drum according to claim 3, characterized in that: The teeth of the upper rack and the lower rack are arranged symmetrically, with the top surface of the upper rack tooth flush with the upper surface of the sliding groove, and the top surface of the lower rack tooth flush with the lower surface of the sliding groove; the upper rack, the lower rack and the sliding plate body are of equal length.

9. The swing traction device for a flat yarn weft winding drum according to claim 3, characterized in that: The speed at which the sliding bearing driven by the push plate rolls back and forth on the slide rail is controlled to be in a ratio of 1:10 to 1:20 with the rotation speed of the winding drum.

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