Automatic end finding system of bobbin winder

Abstract

The automatic end finding system comprises a machine frame, a first rotating shaft, a yarn guiding assembly, a yarn cylinder, a second rotating shaft, a movable support, a sleeve, a movable connecting rod, a fixed support, a motor and a control unit. The yarn guide assembly comprises a yarn guide pipe, a protective cover, a guide groove, an electric mechanical arm, a suction head, a corrugated pipe and a negative pressure system. The suction head comprises an extraction opening, a photoelectric sensor, an electric pressing plate, a baffle and a guide rod. The hollow suction head is arranged, and the thread residue is sucked into the suction head through the negative pressure generated by the negative pressure system; and the electric pressing plate and the baffle plate are matched to clamp the wire end so as to carry out subsequent automatic wiring on the wire end. The problem that thread ends are lack of grabbing and clamping structures is solved, automatic connection of thread end finding and thread end connecting is achieved, and the production efficiency of the automatic bobbin winder is improved.

Description

Technical Field

[0001] This utility model relates to the field of winding machine technology, specifically to an automatic head-finding system for winding machines. Background Technology

[0002] Winding machines are specialized equipment in the textile industry. As the final step in spinning and the first step in weaving, winding plays a crucial "bridge" role, thus holding a vital position in the textile field. Automatic winding machines are the latest generation of high-level textile machinery integrating mechanics, electronics, instrumentation, and pneumatics. Their function is to wind yarn into knotless bobbins and remove yarn defects during the winding process. How to quickly and cost-effectively locate randomly distributed yarn ends around the bobbin is a key technical challenge that urgently needs to be overcome in the automation of winding machines.

[0003] For example, Chinese invention patent CN222204369U, published on December 20, 2024, discloses a yarn head finding structure for a winding machine. It includes a chassis, a servo motor located in the lower center of the chassis, with the servo motor's shaft passing through the chassis, a yarn magazine located on the upper side of the chassis, and the end of the servo motor's shaft connected to the center of the bottom of the yarn magazine. The yarn magazine has yarn tube holes arranged in a circular array, penetrating the yarn magazine vertically. A support rod is located at the bottom of each yarn tube hole, with a column facing upwards in the middle of the support rod. An air outlet is located on the chassis directly below one of the yarn tube holes, with an air inlet pipe below the outlet. The air inlet pipe is connected to a high-pressure air pipe, which has an electromagnetic control valve. The invention also includes a controller electrically connected to the electromagnetic control valve and the servo motor. This invention can quickly find the yarn head.

[0004] As can be seen from the above patents, the winding machine's head-finding structure uses high-pressure gas to blow the thread end out of the yarn tube hole. The blown thread end lacks a gripping and clamping structure, which is not conducive to subsequent automated wiring. Therefore, this invention provides an automatic head-finding system for winding machines to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an automatic head-finding system for winding machines.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An automatic yarn guide system for a winding machine includes a frame. A first rotating shaft is disposed inside the frame, and a yarn guide assembly is fixedly connected to the first rotating shaft. The yarn guide assembly includes a yarn guide tube and a protective cover. A guide groove is provided on the outer arc circumference of the yarn guide tube, and the guide groove sequentially runs from the center of the yarn guide tube to the left end, then back to the center, then to the right end, and back to the center. An electric robotic arm is disposed below the yarn guide tube, and the bottom end of the electric robotic arm is rotatably connected to the frame. A suction head is fixedly mounted on the front end of the electric robotic arm. The suction head is a... The suction head is a hollow, horn-shaped structure. It includes an air intake, a photoelectric sensor, an electric pressure plate, a baffle, and a guide rod. The front end of the suction head is recessed inward to form the air intake. The photoelectric sensor is located inside the suction head near the air intake. The electric pressure plate and the baffle are located at the front end of the suction head, and both the electric pressure plate and the baffle are parallel to the upper and lower ends of the suction head. The baffles are arranged in pairs, one above the other. A guide rod is arranged between the baffles, and the guide rods are arranged in pairs, one to the left and one to the right. The guide rods are located near the left and right ends of the suction head. The electric pressure plate is sleeved and slidably connected to the guide rod.

[0008] Preferably, the air extraction port is sealed to the bellows, which is built into the electric robotic arm and connected to the negative pressure system.

[0009] Preferably, the protective cover covers the periphery of the yarn guide tube and is lower than the top of the yarn guide tube.

[0010] Preferably, a yarn bobbin is provided above the yarn guide tube, and the outer wall of the yarn bobbin is in contact with the outer wall of the yarn guide tube. A second rotating shaft is provided at the center of the yarn bobbin. One end of the second rotating shaft is hinged and rotatably connected to a movable bracket provided on the machine frame, and the other end of the second rotating shaft is rotatably connected to a sleeve. The sleeve is bent and connected to a fixed bracket mounted on the machine frame through a movable connecting rod. One end of the movable connecting rod is sleeved on the fixed bracket and can move up and down.

[0011] Preferably, a motor is installed inside the frame, and the output end of the motor is connected to the first rotating shaft via a coupling.

[0012] Preferably, a control unit is provided on one side of the frame, and the control unit is electrically connected to the motor, electric robotic arm, photoelectric sensor, electric pressure plate, and negative pressure system respectively.

[0013] The beneficial effects of this utility model are:

[0014] The device employs a hollow suction head and utilizes negative pressure generated by a negative pressure system to draw the wire end into the suction head. An electric pressure plate and a baffle work together to clamp the wire end, facilitating subsequent automated wiring. This application solves the problem of the lack of a wire end gripping and clamping structure, achieving automated wire end finding and splicing, and improving the production efficiency of automated winding machines. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0017] Figure 1 This is a front view structural diagram of the present utility model;

[0018] Figure 2 This is a schematic diagram of the yarn guide assembly of this utility model;

[0019] Figure 3 This is a side view of the suction head of this utility model;

[0020] Figure 4 This is a front view schematic diagram of the suction head of this utility model;

[0021] Figure 5 This is a schematic diagram of the yarn guide tube and guide groove structure of this utility model;

[0022] The diagram shows: 1. Frame; 2. First rotating shaft; 3. Yarn guiding assembly; 31. Yarn guiding tube; 32. Protective cover; 33. Guide groove; 34. Electric robotic arm; 35. Suction head; 351. Air extraction port; 352. Photoelectric sensor; 353. Electric pressure plate; 354. Baffle; 355. Guide rod; 36. Corrugated pipe; 37. Negative pressure system; 4. Yarn bobbin; 5. Second rotating shaft; 6. Movable bracket; 7. Sleeve; 8. Movable connecting rod; 9. Fixed bracket; 10. Motor; 11. Control unit. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0026] It should be noted that similar labels and letters are likely to represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Reference Figures 1-5This utility model discloses an automatic yarn guide system for a winding machine, comprising a frame 1, a first rotating shaft 2, a yarn guide assembly 3, a yarn bobbin 4, a second rotating shaft 5, a movable support 6, a sleeve 7, a movable connecting rod 8, a fixed support 9, a motor 10, and a control unit 11. The first rotating shaft 2, mounted inside the frame 1, is fixedly connected to the yarn guide assembly 3. The yarn guide assembly 3 includes a yarn guide tube 31, a protective cover 32, a guide groove 33, an electric robotic arm 34, a suction head 35, a corrugated pipe 36, and a negative pressure system 37. The yarn guide tube 31 is fixedly connected to the first rotating shaft 2 and rotated by the first rotating shaft 2. The guide groove 33, located on the outer arc circumference of the yarn guide tube 31, sequentially extends from the center of the yarn guide tube 31 to the left end, then back to the center, then to the right end, and back to the center. This guide groove 33 guides the yarn passing through the yarn guide tube 33 as it winds on the yarn bobbin 4, moving from the center to the left end, then back to the center, then to the rear end, and back to the center, achieving uniform distribution of the yarn on the yarn bobbin 4. An electric robotic arm 34 is installed below the yarn guide tube 31. The bottom end of the electric robotic arm 34 is rotatably connected to the frame 1 and driven by a drive mechanism (not shown in the figure). A hollow, trumpet-shaped suction head 35 is fixedly installed on the front end of the electric robotic arm 34. The suction head 35 includes an air extraction port 351, a photoelectric sensor 352, an electric pressure plate 353, a baffle 354, and a guide rod 355. The air extraction port 351, located at the rear end of the suction head 35, is used to extract air from inside the suction head 35. The photoelectric sensor 352, located inside the suction head 35 near the air extraction port 351, is used to detect the air extraction port. Are there any loose threads at position 351? The front end of the suction head 35 is provided with an electric pressure plate 353 and a baffle 354 parallel to the upper and lower ends of the suction head 35. The baffles 354 are arranged in pairs, one above the other. The electric pressure plate 353 can move between the upper and lower baffles 354 and can be used in conjunction with the lower baffle 354 to press the loose threads. A pair of guide rods 355 are also provided between the upper and lower baffles 354. The electric pressure plate 353 is sleeved on and slidably connected to the guide rods 355 to slide up and down. The guide rods 355 are used to guide the sliding of the electric pressure plate 353 and limit the direction of the sliding of the electric pressure plate 353.

[0030] A yarn bobbin 4 is installed above the yarn guide tube 31. The outer wall of the yarn bobbin 4 is in contact with the outer wall of the yarn guide tube 31 to ensure that the rotation of the yarn guide tube 31 can drive the rotation of the yarn bobbin 4 to wind the yarn. A second rotating shaft 5 is provided at the center of the yarn bobbin 4. One end of the second rotating shaft 5 is hinged and rotatably connected to the movable bracket 6 on the frame 1. The other end of the second rotating shaft 5 is rotatably connected to the sleeve 7. The sleeve 7 is bent and connected to the fixed bracket 9 on the frame 1 through the movable connecting rod 8. One end of the movable connecting rod 8 is sleeved on the fixed bracket 9 and can move up and down. The rotation of the yarn spool 4 drives the second rotating shaft 5 to rotate. The two ends of the second rotating shaft 5 are respectively rotatably connected to the movable bracket 6 and the sleeve 7. The weight of the movable connecting rod 8 and the sleeve 7 is applied to the second rotating shaft 5, so that the outer wall of the yarn spool 4 is in contact with the outer wall of the yarn guide tube 31, thus pressing the yarn spool 4 tightly against the yarn guide tube 31. At the same time, the movable connecting rod 8 and the sleeve 7 can be disengaged from the second rotating shaft 5, making it easy to replace the yarn spool 4.

[0031] In an optional embodiment, the air extraction port 351 is sealed to the bellows 36, which is built into the electric robotic arm 34 and connected to the negative pressure system 37, through which air is extracted from the suction head 35 by the negative pressure system 37 via the air extraction port 351.

[0032] In an optional embodiment, the protective cover 32 covers the periphery of the yarn guide tube 31 and is lower than the top of the yarn guide tube 31 to ensure that the suction head 35 works normally.

[0033] In an optional embodiment, a motor 10 is installed inside the frame 1, and the output end of the motor 10 is connected to a first rotating shaft 2 via a coupling; the first rotating shaft 2 is driven to rotate by the motor 10.

[0034] In an optional embodiment, a control unit 11 is provided on one side of the frame 1. The control unit 11 is electrically connected to and controls the motor 10, the electric robotic arm 34, the photoelectric sensor 352, the electric pressure plate 353, and the negative pressure system 37 respectively.

[0035] The workflow of this utility model is as follows:

[0036] When the yarn spool 4 breaks, a thread end appears. The control unit 11 first controls the motor 10 to stop, and then rotates in the opposite direction, sequentially driving the first rotating shaft 2, the guide tube 31, and the yarn spool 4 to reverse. The thread end is pulled out in the opposite direction on the yarn spool 4, becoming more numerous and longer at the connection between the guide tube 31 and the yarn spool 4. The control unit 11 controls and starts the electric robotic arm 34 to align the suction head 35 with the connection between the guide tube 31 and the yarn spool 4. The negative pressure system 37 is started. The negative pressure system 37 draws air from the suction head 35 through the air extraction port 351 to create negative pressure inside the suction head 35. The thread end is sucked into the air extraction port 351 inside the suction head 35 by the suction force of the negative pressure. After the thread end is detected by the photoelectric sensor 352, it transmits a signal to the control unit 11. The control unit 11 issues a command to control the electric pressure plate 353 to move down from the upper baffle 354 to the lower baffle 354, thus clamping the thread end.

[0037] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical structures, the control method and circuit connection and other technical means will not be described in detail.

[0038] Of course, the embodiments described in this specific implementation are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An automatic head-finding system for a winding machine, comprising a frame (1), wherein a first rotating shaft (2) is provided inside the frame (1), and a yarn guide assembly (3) is fixedly connected to the first rotating shaft (2), the yarn guide assembly (3) comprising a yarn guide tube (31) and a protective cover (32), wherein a guide groove (33) is provided on the outer arc circumference of the yarn guide tube (31), the guide groove (33) sequentially running from the center of the yarn guide tube (31) to the left end, then back to the center, then to the right end, and back to the center on the outer arc circumference of the yarn guide tube (31); an electric robotic arm (34) is provided below the yarn guide tube (31), the bottom end of the electric robotic arm (34) is rotatably connected to the frame (1), and a suction head (35) is fixedly installed on the front end of the electric robotic arm (34), the suction head (35) being a hollow trumpet shape, characterized in that: The suction head (35) includes an air intake port (351), a photoelectric sensor (352), an electric pressure plate (353), a baffle (354), and a guide rod (355). The front end of the suction head (35) is recessed into the interior of the suction head (35) to form the air intake port (351). The photoelectric sensor (352) is located inside the suction head (35) near the air intake port (351). The electric pressure plate (353) and the baffle (354) are located at the front end of the suction head (35). 354), the electric pressure plate (353) and the baffle (354) are parallel to the upper and lower ends of the suction head (35). The baffle (354) are arranged in pairs, one above the other. A guide rod (355) is arranged between the baffles (354). The guide rod (355) is arranged in pairs, one on the left and one on the right. The guide rod (355) is close to the left and right ends of the suction head (35). The electric pressure plate (353) is sleeved and slidably connected to the guide rod (355).

2. The automatic head-finding system for a winding machine according to claim 1, characterized in that: The air extraction port (351) is sealed to the bellows (36), which is built into the electric robotic arm (34) and connected to the negative pressure system (37).

3. The automatic head-finding system for a winding machine according to claim 1, characterized in that: The protective cover (32) covers the periphery of the yarn guide tube (31) and is lower than the top of the yarn guide tube (31).

4. The automatic head-finding system for a winding machine according to claim 1, characterized in that: A yarn spool (4) is provided above the yarn guide tube (31). The outer wall of the yarn spool (4) is in contact with the outer wall of the yarn guide tube (31). A second rotating shaft (5) is provided at the center of the yarn spool (4). One end of the second rotating shaft (5) is hinged and rotatably connected to a movable bracket (6) provided on the frame (1). The other end of the second rotating shaft (5) is rotatably connected to a sleeve (7). The sleeve (7) is bent and connected to a fixed bracket (9) mounted on the frame (1) through a movable connecting rod (8). One end of the movable connecting rod (8) is sleeved on the fixed bracket (9) and can move up and down.

5. The automatic head-finding system for a winding machine according to claim 2, characterized in that: A motor (10) is installed inside the frame (1), and the output end of the motor (10) is connected to the first rotating shaft (2) through a coupling.

6. The automatic head-finding system for a winding machine according to claim 5, characterized in that: A control unit (11) is provided on one side of the frame (1), and the control unit (11) is electrically connected to the motor (10), the electric robotic arm (34), the photoelectric sensor (352), the electric pressure plate (353), and the negative pressure system (37).

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