A yarn grabbing and feeding mechanism for a yarn feeding machine

Abstract

This utility model relates to the field of textile machinery technology and discloses a yarn gripping and dispensing mechanism for a yarn feeding machine, including a worktable, a dispensing table, yarn bars, a clamping assembly, a yarn gathering assembly, and a yarn detection and operation assembly. Through the cooperation of a motor and rotary bearing on a support base, a connecting frame, a support frame, and an electric telescopic rod, the clamping assembly can move flexibly in multiple directions to accurately grip the yarn bars. A probe can detect the number of yarn bars. A camera can monitor in real time and upload images to a PLC system to guide the gripping and dispensing actions. An air pipe connects to a bidirectional air pump inside the worktable, enabling air suction for yarn end gripping and air blowing for yarn end dispensing. The entire system automates yarn bar gripping, dispensing, and yarn end processing, significantly improving operational efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery technology, specifically to a yarn grabbing and dispensing mechanism for a yarn feeding machine. Background Technology

[0002] In textile production, the yarn feeding and dispensing stage of the yarn feeder has a significant impact on production efficiency and subsequent processing quality. Existing yarn feeder mechanisms generally suffer from low automation and insufficient positioning accuracy in both feeding and dispensing. Their feeding components mostly move in a single direction, making it difficult to flexibly adapt to the feeding needs of yarn bars in different positions. Furthermore, improper control of clamping force can easily lead to damage or detachment of the yarn bars. Simultaneously, the handling of yarn ends largely relies on manual assistance, failing to achieve automatic threading and collection. This not only increases labor intensity but also easily leads to yarn end tangling due to human error, affecting the normal operation of subsequent processes. Moreover, the efficiency of collecting yarn ends from multiple yarn bars is low, severely restricting the overall production efficiency of the yarn feeding stage. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a yarn grabbing and dispensing mechanism for a yarn feeding machine, thereby solving the problems of low automation and the inability to automatically thread and collect yarn ends in existing yarn grabbing and dispensing mechanisms.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a yarn grabbing and dispensing mechanism for a yarn feeding machine, comprising a worktable, a dispensing table, a yarn bar, a clamping assembly, a yarn gathering assembly, and a yarn detection and operation assembly. The yarn detection and operation assembly is used to guide the yarn end of the yarn bar into the through hole inside the yarn bar and operate it to wait for grabbing and dispensing.

[0005] The clamping assembly includes a clamping post and a third electrically operated telescopic rod;

[0006] A support base is provided on the side of the workbench away from the yarn detection and operation components. A first rotary bearing is provided on the top of the support base, and a first motor is provided on the top of the first rotary bearing. The first motor is used to control the rotation of the first rotary bearing. The support base is rotatably connected to one end of a horizontally arranged connecting frame through the first rotary bearing. A second rotary bearing is provided on the top of the other end of the connecting frame, and a second motor is provided at the bottom of the second rotary bearing. The second motor is used to control the rotation of the second rotary bearing. The connecting frame is rotatably connected to one side of the bottom of the support frame through the second rotary bearing.

[0007] A first electric telescopic rod is installed on the side of the support frame away from the connecting frame. The bottom end of the first electric telescopic rod is fixedly connected to one side of the connecting plate. A fourth motor is installed at the bottom of the connecting plate below the first electric telescopic rod. Multiple third electric telescopic rods are installed around the fourth motor. Multiple clamping columns are installed at the bottom of the other side of the connecting plate. A tapered through hole is provided in the middle of the clamping column. A third through hole is provided on the side of the clamping column near the fourth motor. The third electric telescopic rod is located in the third through hole and is movably connected to the clamping column.

[0008] Preferred configuration: A conveyor belt is installed on the top of the dispensing platform, a dispensing rack is installed on the conveyor belt, a cable collection hole is installed in the middle of the dispensing rack, and multiple dispensing cylinders are installed around the cable collection hole.

[0009] Preferred: The hub assembly includes a camera, a mounting bracket, an air tube, a movable plug, and a second electrically operated telescopic rod;

[0010] A camera is installed on the side wall of the lower support base of the connecting frame. A semi-circular mounting bracket is installed on the top of the connecting plate near the clamping column. An air pipe is connected to the top of the mounting bracket. A semi-circular cavity is set inside the mounting bracket. The top of the semi-circular cavity is connected to the air pipe. Multiple first through holes are connected to the bottom of the semi-circular cavity. A second through hole is set on the inner wall of the first through hole near the first electric telescopic rod. A movable plug is set in the second through hole. The movable plug is fixedly connected to one end of the second electric telescopic rod near the first electric telescopic rod. A third motor is connected to the other end of the second electric telescopic rod. The third motor is used to drive the second electric telescopic rod.

[0011] A fourth through hole is provided on the connecting plate corresponding to the first through hole, and the first through hole and the fourth through hole are interconnected; the fourth through hole is interconnected with the tapered through hole to realize the connection between the mounting bracket and the clamping column.

[0012] Preferably, a probe is also installed on the top of the workbench.

[0013] Preferably, the top outer periphery of the cable collection hole in the middle of the delivery rack is provided with a protrusion.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] By controlling the multi-angle rotation of the connecting frame and support frame with the first and second motors respectively, and coordinating with the first electric telescopic rod to drive the clamping component to move up and down, the flexible multi-directional movement of the gripping component is realized. This allows it to easily adapt to the gripping needs of yarn bars in different positions, significantly improving the level of automation. Real-time image capture by a camera and uploading to the PLC system for position monitoring, combined with the coordinated operation of the motors and the electric telescopic rod, effectively improves the positioning accuracy of gripping and placement, reducing the occurrence of yarn bar damage or detachment. The yarn collection component achieves automatic collection and placement of yarn ends through a series of automated operations such as air suction through the air pipe, clamping with the movable plug, and air blowing through the air pipe, eliminating the need for manual assistance and avoiding the problem of yarn end confusion caused by human error. Simultaneously, the detection head for the number of yarn bars and the camera's judgment of the empty / full state of the placement cylinder further ensure the orderly progress of the entire yarn placement process, significantly improving the efficiency of collecting yarn ends from multiple yarn bars, thereby comprehensively improving the overall production efficiency of the yarn placement process. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a side view of the three-dimensional structure of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.

[0020] The components include: 1. Workbench; 2. Feeding platform; 201. Conveyor belt; 3. Feeding rack; 301. Feeding cylinder; 302. Cable collection hole; 4. Yarn bar; 5. Detector head; 6. Support base; 601. First rotary bearing; 602. First motor; 7. Camera; 8. Connecting frame; 801. Second rotary bearing; 802. Second motor; 9. Support frame; 901. First electric telescopic rod; 10. Mounting frame; 1001. Cavity; 1002. First through hole; 1003. Movable plug; 1004. Second through hole; 1005. Second electric telescopic rod; 1006. Third motor; 11. Clamping column; 1101. Conical through hole; 1102. Third through hole; 1103. Third electric telescopic rod; 1104. Fourth motor; 12. Air pipe; 13. Connecting plate; 1301. Fourth through hole; 14. Yarn detection and operation assembly. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 - Figure 4 A yarn grabbing and dispensing mechanism for a yarn feeding machine includes a worktable 1, a dispensing table 2, a yarn bar 4, a clamping assembly, a yarn gathering assembly, and a yarn detection and operation assembly 14. The detection and operation assembly 14 is used to guide the yarn end of the yarn bar 4 into the through hole inside the yarn bar 4 and operate it to wait for grabbing and dispensing.

[0023] The clamping assembly includes a clamping post 11 and a third electrically operated telescopic rod 1103;

[0024] A support base 6 is provided on the side of the workbench 1 away from the yarn detection and operation component 14. A first rotary bearing 601 is provided on the top of the support base 6. A first motor 602 is provided on the top of the first rotary bearing 601. The first motor 602 is used to control the rotation of the first rotary bearing 601. The support base 6 is rotatably connected to one end of the horizontally arranged connecting frame 8 through the first rotary bearing 601. A second rotary bearing 801 is provided on the top of the other end of the connecting frame 8. A second motor 802 is provided on the bottom of the second rotary bearing 801. The second motor 802 is used to control the rotation of the second rotary bearing 801. The connecting frame 8 is rotatably connected to one side of the bottom of the support frame 9 through the second rotary bearing 801.

[0025] A first electric telescopic rod 901 is provided on the side of the support frame 9 away from the connecting frame 8. The bottom end of the first electric telescopic rod 901 is fixedly connected to one side of the connecting plate 13. A fourth motor 1104 is provided at the bottom of the connecting plate 13 below the first electric telescopic rod 901. Multiple third electric telescopic rods 1103 are provided around the fourth motor 1104. Multiple clamping posts 11 are provided at the bottom of the other side of the connecting plate 13. A tapered through hole 1101 is provided in the middle of the clamping post 11. A third through hole 1102 is provided on the side of the clamping post 11 near the fourth motor 1104. The third electric telescopic rod 1103 is located in the third through hole 1102 and is movably connected to the clamping post 11.

[0026] Through the above technical solution, when it is necessary to grasp the yarn bar 4, the first motor 602 on the support base 6 starts, driving the first rotary bearing 601 to rotate, which in turn drives the horizontally arranged connecting frame 8 to rotate horizontally with the support base 6 as the base point, adjusting the orientation of the connecting frame 8 so that the support frame 9 connected to the other end can be aligned with the position of the yarn bar 4. Subsequently, the second motor 802 at the other end of the connecting frame 8 works, controlling the second rotary bearing 801 to rotate, driving the support frame 9 connected to it to rotate at multiple angles, further fine-tuning the position and angle of the support frame 9, ensuring that the clamping component below can be accurately aligned with the yarn bar 4;

[0027] After the position adjustment is completed, the first electric telescopic rod 901 inside the support frame 9 begins to extend and retract, and the connecting plate 13 fixedly connected to its bottom end moves up and down accordingly, causing the bottom clamping column 11 to move closer to or away from the yarn bar 4. When the clamping column 11 descends to the top of the yarn bar 4, the conical through hole 1101 in the middle of the clamping column 11 covers the top of the yarn bar 4. At this time, the fourth motor 1104 at the bottom of the connecting plate 13 starts, controlling the multiple third electric telescopic rods 1103 on its outer periphery to extend and retract within the third through hole 1102 on one side of the clamping column 11. When the third electric telescopic rod 1103 extends, it will extend out from the third through hole 1102 and squeeze the yarn bar 4. Using the inner wall of the conical through hole 1101, the yarn bar 4 is firmly clamped, completing the grasping action; when it is necessary to release the yarn bar 4, the fourth motor 1104 controls the third electric telescopic rod 1103 to retract, releasing the squeeze on the yarn bar 4, realizing the release.

[0028] This utility model provides a technical solution: a conveyor belt 201 is provided on the top of the delivery platform 2, a delivery rack 3 is provided on the conveyor belt 201, a cable collection hole 302 is provided in the middle of the delivery rack 3, and a plurality of delivery cylinders 301 are provided around the cable collection hole 302.

[0029] The hub assembly includes a camera 7, a mounting bracket 10, an air pipe 12, a movable plug 1003, and a second electric telescopic rod 1005;

[0030] A camera 7 is installed on the side wall of the lower support base 6 of the connecting frame 8. A semi-circular mounting frame 10 is installed on the top of the connecting plate 13 near the clamping column 11. An air pipe 12 is connected to the top of the mounting frame 10. A semi-circular cavity 1001 is provided inside the mounting frame 10. The top of the semi-circular cavity 1001 is connected to the air pipe 12. A plurality of first through holes 1002 are connected to the bottom of the semi-circular cavity 1001. A second through hole 1004 is provided on the inner wall of the first through hole 1002 near the first electric telescopic rod 901. A movable plug 1003 is provided in the second through hole 1004. The movable plug 1003 is fixedly connected to one end of the second electric telescopic rod 1005 on the side near the first electric telescopic rod 901. The other end of the second electric telescopic rod 1005 is connected to a third motor 1006. The third motor 1006 is used to drive the second electric telescopic rod 1005.

[0031] A fourth through hole 1301 is provided on the connecting plate 13 corresponding to the first through hole 1002. The first through hole 1002 and the fourth through hole 1301 are interconnected. The fourth through hole 1301 is interconnected with the tapered through hole 1101 to realize the connection between the mounting bracket 10 and the clamping column 11.

[0032] Through the above technical solution, when the clamping component picks up the yarn bar 4 and it needs to be put into operation, the conveyor belt 201 starts to operate, driving the putting rack 3 on the top of the putting platform 2 to move and transport the empty putting rack 3 to the designated putting position. During this process, the camera 7 on the side wall of the support base 6 below the connecting frame 8 captures the image of the putting rack 3 in real time and uploads the image to the PLC system to monitor whether the putting cylinder 301 is empty and whether the quantity meets the putting requirements. At the same time, it accurately positions the putting cylinder 301 and the cable collection hole 302 to provide positioning basis for subsequent putting.

[0033] During thread end processing, the semi-annular mounting bracket 10 at the top of the connecting plate 13 moves together with the connecting plate 13. After the clamping column 11 clamps the yarn bar 4, the air pipe 12 connected to the top of the mounting bracket 10 begins to draw in air. The airflow passes through the semi-annular cavity 1001 inside the mounting bracket 10, through multiple first through holes 1002 connected at the bottom, the corresponding fourth through hole 1301 on the connecting plate 13, and the conical through hole 1101 of the clamping column 11, forming a negative pressure that draws in the thread end inside the yarn bar 4. After the thread end enters the first through hole 1002 through the conical through hole 1101 and the fourth through hole 1301, the third motor 1006 drives the second electric telescopic rod 1005 to extend, pushing the movable plug 1003 to move in the second through hole 1004 until the movable plug 1003 clamps the thread end in the first through hole 1002, completing the gripping and fixing of the thread end.

[0034] When yarn rod 4 needs to be placed into the delivery cylinder 301, under the positioning guidance of camera 7, the connecting frame 8 and support frame 9 are adjusted by the first motor 602 and the second motor 802, so that the clamping post 11 is aligned with the corresponding delivery cylinder 301. Then, the third electric telescopic rod 1103 retracts, and the yarn rod 4 falls into the delivery cylinder 301 under the action of gravity. When the thread end is placed, the bottom of one of the clamping posts 11 is first aligned with the thread collecting hole 302. Then, the second electric telescopic rod 1005 at the first through hole 1002 corresponding to the clamping post 11 retracts, driving the movable plug 1003 to release the clamp on the thread end. At this time, the air pipe 12 switches to the blowing state. The airflow passes through the semi-annular cavity 1001, the first through hole 1002, the fourth through hole 1301 and the conical through hole 1101, blowing the thread end into the thread collecting hole 302. Then, by adjusting the position of the clamping component, the other clamping post 11 is aligned with the yarn collection hole 302, and the above yarn end delivery steps are repeated until all the yarn ends of the yarn rods 4 fall into the yarn collection hole 302, thus completing the entire delivery process.

[0035] This utility model provides a technical solution in which a probe head 5 is also provided on the top of the workbench 1, and a protrusion is provided on the outer periphery of the top of the cable collection hole 302 in the middle of the delivery rack 3.

[0036] Through the above technical solution, the probe head 5 on the top of the workbench 1 can detect whether the number of yarn rods 4 on the workbench 1 has been reached. The protrusion on the outer periphery of the top of the yarn collecting hole 302 can better align the yarn collecting hole 302 with the bottom of the clamping post 11, preventing the yarn ends of the yarn rods 4 from falling outside the yarn collecting hole 302.

[0037] The working principle of this utility model is as follows: First, the first motor 602 on the support base 6 drives the first rotary bearing 601, and the second motor 802 on the connecting frame 8 drives the second rotary bearing 801, thereby driving the connecting frame 8 and the support frame 9 to rotate at multiple angles. Simultaneously, combined with the extension and retraction of the first electric telescopic rod 901 on the support frame 9, the clamping component can move flexibly and adjust its position in space. During this process, the camera 7 on the side wall of the support base 6 captures images in real time and uploads them to the PLC system, providing accurate data for the mechanism's position positioning and status monitoring, ensuring that the clamping component can accurately align with the yarn bar 4 and the feeding rack 3.

[0038] When gripping the yarn bar 4, the probe head 5 first checks whether the number of yarn bars 4 on the worktable 1 is sufficient for one gripping operation. If the number is sufficient, the first electric telescopic rod 901 drives the connecting plate 13 and the bottom clamping column 11 to descend, so that the tapered through hole 1101 of the clamping column 11 covers the top of the yarn bar 4. Then, the fourth motor 1104 controls the third electric telescopic rod 1103 to extend in the third through hole 1102, clamping the top of the yarn bar 4 to complete the gripping. At the same time, the air pipe 12 on the mounting frame 10 begins to draw in air. The other end of the air pipe 12 is connected to a bidirectional air pump located inside the workbench 1. The bidirectional air pump provides the suction power. The airflow passes through the channel formed by the semi-annular cavity 1001, the first through hole 1002, the fourth through hole 1301 and the conical through hole 1101, drawing the thread end in the yarn bar 4 into the first through hole 1002. Then, the third motor 1006 drives the second electric telescopic rod 1005 to extend, pushing the movable plug 1003 to clamp the thread end.

[0039] After the grasping is completed, the mechanism, guided by the positioning of the camera 7, adjusts itself above the conveyor belt 201 of the delivery platform 2, confirming that there are a sufficient number of empty delivery cylinders 301 on the delivery rack 3. Next, the first electric telescopic rod 901 lowers the clamping assembly, aligning the clamping post 11 with the delivery cylinder 301. The fourth motor 1104 controls the third electric telescopic rod 1103 to retract, and the yarn rod 4 falls into the delivery cylinder 301 under gravity. After all the yarn rods 4 on the clamping post 11 have fallen into the delivery cylinder 301, the clamping assembly adjusts its position so that the clamping post 11 is aligned with the yarn collecting hole 302 in the middle of the delivery rack 3. The protrusion on the outer periphery of the top of the yarn collecting hole 302 allows for better alignment between the yarn collecting hole 302 and the bottom of the clamping post 11, preventing the yarn ends of the yarn rods 4 from falling outside the yarn collecting hole 302. The second electric telescopic rod 1005 at the corresponding position retracts, the movable plug 1003 loosens the wire end, at this time the bidirectional air pump switches to the blowing state, the air pipe 12 switches to the blowing state accordingly, and blows the wire end into the cable collection hole 302 through the channel. This operation is repeated until all wire ends are delivered.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A yarn gripping and feeding mechanism for a yarn feeding machine, characterized in that: It includes a workbench (1), a feeding table (2), a yarn bar (4), a clamping assembly, a yarn gathering assembly, and a yarn detection and operation assembly (14). The detection and operation assembly (14) is used to guide the yarn end of the yarn bar (4) into the through hole inside the yarn bar (4) and operate it to wait for it to be picked up and fed. The clamping assembly includes a clamping post (11) and a third electrically operated telescopic rod (1103). A support base (6) is provided on the side of the workbench (1) away from the yarn detection operation component (14). A first rotary bearing (601) is provided on the top of the support base (6). A first motor (602) is provided on the top of the first rotary bearing (601). The first motor (602) is used to control the rotation of the first rotary bearing (601). The support base (6) is rotatably connected to one end of the horizontally arranged connecting frame (8) through the first rotary bearing (601). A second rotary bearing (801) is provided on the top of the other end of the connecting frame (8). A second motor (802) is provided on the bottom of the second rotary bearing (801). The second motor (802) is used to control the rotation of the second rotary bearing (801). The connecting frame (8) is rotatably connected to one side of the bottom of the support frame (9) through the second rotary bearing (801). A first electric telescopic rod (901) is provided on the side of the support frame (9) away from the connecting frame (8). The bottom end of the first electric telescopic rod (901) is fixedly connected to one side of the connecting plate (13). A fourth motor (1104) is provided at the bottom of the connecting plate (13) below the first electric telescopic rod (901). Multiple third electric telescopic rods (1103) are provided around the fourth motor (1104). Multiple clamping columns (11) are provided at the bottom of the other side of the connecting plate (13). A tapered through hole (1101) is provided in the middle of the clamping column (11). A third through hole (1102) is provided on the side of the clamping column (11) close to the fourth motor (1104). The third electric telescopic rod (1103) is located in the third through hole (1102) and is movably connected to the clamping column (11).

2. The yarn gripping and feeding mechanism of a yarn feeding machine according to claim 1, characterized in that: The top of the delivery platform (2) is equipped with a conveyor belt (201), and a delivery rack (3) is installed on the conveyor belt (201). A cable collection hole (302) is installed in the middle of the delivery rack (3), and multiple delivery cylinders (301) are installed around the cable collection hole (302).

3. The yarn gripping and feeding mechanism of a yarn feeding machine according to claim 2, characterized in that: The hub assembly includes a camera (7), a mounting bracket (10), an air tube (12), a movable plug (1003), and a second electric telescopic rod (1005); A camera (7) is installed on the side wall of the lower support base (6) of the connecting frame (8). A semi-circular mounting frame (10) is installed on the top of the connecting plate (13) near the clamping column (11). An air pipe (12) is connected to the top of the mounting frame (10). A semi-circular cavity (1001) is provided inside the mounting frame (10). The top of the semi-circular cavity (1001) is connected to the air pipe (12). A number of first through holes (1002) are connected to the bottom of the semi-circular cavity (1001). A second through hole (1004) is provided on the inner wall near the first electric telescopic rod (901). A movable plug (1003) is provided in the second through hole (1004). The movable plug (1003) is fixedly connected to one end of the second electric telescopic rod (1005) on the side near the first electric telescopic rod (901). The other end of the second electric telescopic rod (1005) is connected to a third motor (1006). The third motor (1006) is used to drive the second electric telescopic rod (1005). A fourth through hole (1301) is provided on the connecting plate (13) corresponding to the first through hole (1002). The first through hole (1002) and the fourth through hole (1301) are interconnected. The fourth through hole (1301) is interconnected with the tapered through hole (1101) to realize the connection between the mounting bracket (10) and the clamping column (11).

4. The yarn gripping and feeding mechanism of a yarn feeding machine according to claim 1, characterized in that: A probe (5) is also installed on the top of the workbench (1).

5. The yarn gripping and feeding mechanism of a yarn feeding machine according to claim 2, characterized in that: The top outer periphery of the cable collection hole (302) in the middle of the delivery rack (3) is provided with a protrusion.

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