A device for automatically leaving yarn tail which can be widely applied to high-speed slotted cylinder machine
By integrating an electromagnet and CPU-controlled automatic yarn tail-keeping device into a high-speed slotted yarn machine, the problems of low efficiency and safety hazards associated with traditional manual yarn tail-keeping have been solved. This has enabled automated and precise control of yarn tail length, improving production efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI YUNKE ELECTRONICS CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-06-26
AI Technical Summary
In traditional winding processes, leaving yarn tails requires manual operation, which poses safety hazards, is inefficient, and makes it difficult to standardize yarn tail lengths.
An automatic yarn tail retaining device was designed, comprising an electromagnet, an armature block, a movable push rod, a tension spring, and a CPU microcontroller intelligent control PCB circuit board. The device controls the up-and-down movement of the yarn-blocking head through the electromagnet's attraction structure, and precisely adjusts the yarn tail length in conjunction with the CPU control circuit.
It achieves automated yarn tail retention, reduces safety hazards, improves work efficiency, ensures consistent yarn tail length, and is suitable for various high-speed slotted yarn machines.
Smart Images
Figure CN224411108U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a yarn tail retaining device, specifically an automatic yarn tail retaining device applied to a high-speed grooved drum machine. Background Technology
[0002] "Leaving a yarn tail" refers to the practice of pre-winding a specified length of yarn at the base of the yarn bobbin during the yarn winding process. This leaves two outward-facing yarn ends on the bobbin: one is the normal unwinding end, and the other is the reserved yarn tail. Leaving a yarn tail has several advantages. For example, in subsequent processing stages such as dyeing and weaving, it facilitates identification of the starting end of the yarn bobbin and streamlines operations. Especially in reducing labor costs, connecting the yarn end of one bobbin to the yarn tail of another effectively increases the amount of yarn that can be wound. Workers can pre-connect the yarn ends instead of immediately splicing them after the yarn runs out, ensuring uninterrupted operation of high-speed yarn winding machines, improving machine efficiency, and maximizing production capacity.
[0003] Currently, in traditional winding processes, the work of leaving the yarn tail is done manually by hooking the yarn tail. However, this manual method of hooking the yarn tail poses safety hazards, the length of the yarn tail cannot be uniform, and it is time-consuming, labor-intensive, and inefficient. Utility Model Content
[0004] Purpose of the invention: The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an automatic yarn tail retaining device that can be widely used in various types of high-speed grooved drum machines, which can automatically retain yarn tails, reduce safety hazards, and greatly improve work efficiency.
[0005] Technical Solution: To solve the above-mentioned technical problems, the present invention provides an automatic yarn tail retaining device that can be widely used in high-speed grooved yarn machines. The device includes a housing, which comprises a bottom, a shell, and a cover. An electromagnet is installed inside the housing, and an armature block is installed above the electromagnet. One end of the armature block is connected to the shell, and a movable push rod is installed below the other end of the armature block. A tension spring is installed inside the shell next to the movable push rod, with one end connected to the shell and the other end connected to a movable plate. One end of the movable plate is connected to the bottom of the shell, and a yarn-blocking head is installed on the other end of the movable plate. A CPU single-chip microcomputer intelligent control PCB circuit board is installed inside the housing.
[0006] Furthermore, the movable push rod is located in the push rod channel within the housing.
[0007] Furthermore, when energized, the electromagnet attracts the armature block, which pushes the movable push rod downwards. The movable push rod then pushes the movable plate, which moves the yarn-blocking head together, and the tension spring is in a stretched state. When de-energized, the tension spring returns to its original position, causing the movable plate and the yarn-blocking head to return to their original positions.
[0008] Furthermore, the outer casing is located at the left or right end of the high-speed trough mill.
[0009] Furthermore, for models with a grooved protective plate, after opening yarn end holes on the protective plate, this device can be directly installed and fixed on the protective plate for use.
[0010] Furthermore, for conventional models, a bracket with a yarn-blocking head hole can be used to fix the device to the frame of the slotted roller machine, and this device is installed on the bracket for use.
[0011] Beneficial effects: Compared with the prior art, the significant advantages of this utility model are:
[0012] (1) The present invention has a novel design. When loading yarn, after placing the raw yarn bobbin to be processed into the bobbin seat, clamp the yarn end onto the winding yarn tube, place the yarn on the movable yarn stop head, and press the grooved drum motor start switch. At this time, the device and the grooved drum motor start synchronously and start intelligent timing. The yarn is wound to the root position of the yarn tube through the yarn stop head. When the set length or number of turns is reached, the yarn stop head is pressed down, and the yarn enters the left and right swinging winding range of the grooved drum, completing the normal winding of the bobbin yarn.
[0013] (2) This utility model adopts an electromagnet attraction structure to control the up and down movement of the movable plate with the yarn guide head; it adopts a CPU control circuit, and the yarn tail length can be adjusted by controlling the time of the up and down movement of the yarn guide head and the interval of the winding start time of the groove drum through software. The structure is simple and reliable, easy to operate, and can be completed in one step.
[0014] (3) This utility model adopts a single independent structure. The control trigger switch of this device and the single spindle start switch of the high-speed grooved drum machine are connected in parallel. The winding command of the high-speed grooved drum machine and the yarn tail length trigger command of this device are synchronized, and the millisecond-level yarn blocking head action is precisely controlled. This device is independently powered by its own power supply and has strong anti-interference ability.
[0015] (4) This device has a compact structure and can be easily installed on the left and right ends of various high-speed trough machines. The control is ingenious and reasonable. It is a product that integrates mechanical, electrical and magnetic design and realizes intelligent control function at low cost. Attached Figure Description
[0016] Figure 1 This is an exploded view of the present invention;
[0017] Figure 2 This is a schematic diagram of the installation of this utility model;
[0018] Figure 3 This is a schematic diagram of the installation of this utility model and a high-speed trough machine with a protective plate;
[0019] Figure 4This is an installation diagram of the present invention and a common high-speed trough mill and its supporting bracket.
[0020] Figure 5 This is an installation diagram of the present invention and a common high-speed trough mill and its matching bracket 2;
[0021] Figure 6 This is a schematic diagram of the installation of this utility model and the protective plate;
[0022] Figure 7 This is a schematic diagram of the installation of this utility model and bracket one;
[0023] Figure 8 This is a schematic diagram of the installation of this utility model and bracket two. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1
[0025] For models with a grooved protective plate (10), after opening the yarn head hole (11) on the protective plate, this device can be directly installed and fixed on the protective plate (10) for use.
[0026] like Figure 1 , Figure 3 , Figure 6 As shown, the present invention discloses an automatic yarn tail retaining device that can be widely used in high-speed grooved yarn machines. It includes a housing 1, comprising a bottom 1.1, a housing 1.2, and a cover 1.3. An electromagnet 2 is installed inside the housing 1.2, and an armature block 3 is installed above the electromagnet 2. One end of the armature block 3 is connected to the housing 1.2, and a movable push rod 4 is installed below the other end of the armature block 3. The movable push rod 4 is located in a push rod channel within the housing 1.2. A tension spring 5 is installed beside the movable push rod 4 within the housing 1.2, with one end connected to the housing 1.2 and the other end connected to a movable plate 6. One end of the movable plate 6 is connected to the bottom 1.1, and a yarn-blocking head 7 is installed on the other end of the movable plate 6. A CPU single-chip microcomputer intelligent control PCB circuit board 8 is installed inside the housing 1.2.
[0027] When energized, electromagnet 2 magnetically attracts armature block 3, armature block 3 pushes the movable top rod 4 downward, the movable top rod 4 then pushes the movable plate 6, the movable plate 6 moves together with the yarn stop 7, and the tension spring 5 is in a stretched state; when de-energized, tension spring 5 resets, driving the movable plate 6 and the yarn stop 7 to reset together.
[0028] The outer casing 1 is located at the right end of the high-speed trough mill 9. Example 2
[0029] For conventional models, a bracket (12) with a yarn-blocking head hole (11) can be used to fix the device on the trough car frame. This device is installed on the bracket (12) for use.
[0030] like Figure 1 , Figure 4 , Figure 7 As shown, the present invention discloses an automatic yarn tail retaining device that can be widely used in high-speed grooved yarn machines. It includes a housing 1, comprising a bottom 1.1, a housing 1.2, and a cover 1.3. An electromagnet 2 is installed inside the housing 1.2, and an armature block 3 is installed above the electromagnet 2. One end of the armature block 3 is connected to the housing 1.2, and a movable push rod 4 is installed below the other end of the armature block 3. The movable push rod 4 is located in a push rod channel within the housing 1.2. A tension spring 5 is installed beside the movable push rod 4 within the housing 1.2, with one end connected to the housing 1.2 and the other end connected to a movable plate 6. One end of the movable plate 6 is connected to the bottom 1.1, and a yarn-blocking head 7 is installed on the other end of the movable plate 6. A CPU single-chip microcomputer intelligent control PCB circuit board 8 is installed inside the housing 1.2.
[0031] When energized, electromagnet 2 magnetically attracts armature block 3, armature block 3 pushes the movable top rod 4 downward, the movable top rod 4 then pushes the movable plate 6, the movable plate 6 moves together with the yarn stop 7, and the tension spring 5 is in a stretched state; when de-energized, tension spring 5 resets, driving the movable plate 6 and the yarn stop 7 to reset together.
[0032] The outer casing 1 is located at the right end of the high-speed trough mill 9.
[0033] This utility model features a novel design. During yarn loading, the raw yarn bobbin is placed into the bobbin holder, the yarn end is clamped onto the winding tube, and the yarn is placed on the movable yarn stop. The start switch is pressed, and the yarn winds through the yarn stop to the root of the bobbin. When the set length or number of turns is reached, the yarn stop is pressed down, and the yarn enters the left-right swinging winding area of the grooved tube, completing the normal winding of the bobbin. This utility model uses an electromagnet attraction structure to control the up-and-down movement of the movable plate with the yarn stop; it employs a CPU control circuit, allowing software control of the timing of the yarn stop's up-and-down movement and the grooved tube. The yarn tail length is adjusted by varying the interval of the winding start time. The structure is simple, reliable, and easy to operate, achieving the desired result in one step. This utility model adopts a single-unit independent structure. The control trigger switch of this device is connected in parallel with the single-spindle start switch of the high-speed grooved drum machine. The winding command of the high-speed grooved drum machine and the yarn tail length trigger command of this device are synchronized, precisely controlling the millisecond-level yarn-blocking head action. This device is independently powered by its own power supply, providing strong anti-interference capabilities. The device has a compact structure and can be easily installed on the left and right ends of various high-speed grooved drum machines. With scientific control, it is a product that integrates mechanical, electrical, and magnetic designs, achieving intelligent control functions at low cost.
[0034] This utility model provides a concept and method. There are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model. These improvements and modifications should also be considered as the protection scope of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.
Claims
1. An automatic yarn tail retaining device that can be widely used in high-speed grooved drum machines, characterized in that: It includes an outer shell (1), which includes a bottom (1.1), a shell (1.2) and a cover (1.3). An electromagnet (2) is provided inside the shell (1.2). An armature block (3) is provided above the electromagnet (2). One end of the armature block (3) is connected to the shell (1.2). A movable push rod (4) is provided below the other end of the armature block (3). A tension spring (5) is provided inside the shell (1.2) next to the movable push rod (4). One end of the tension spring (5) is connected to the shell (1.2). The other end of the tension spring (5) is connected to a movable plate (6). One end of the movable plate (6) is connected to the bottom (1.1). A yarn-blocking head (7) is provided on the other end of the movable plate (6). A CPU single-chip microcomputer intelligent control PCB circuit board (8) is provided inside the shell (1.2).
2. The automatic yarn tail retaining device according to claim 1, which can be widely applied to high-speed grooved drum machines, is characterized in that: The movable top rod (4) is located in the top rod channel inside the housing (1.2).
3. The automatic yarn tail retaining device according to claim 1, which can be widely applied to high-speed grooved drum machines, is characterized in that: When energized, the electromagnet (2) attracts the armature block (3), and the armature block (3) pushes the movable top rod (4) downward. The movable top rod (4) then pushes the movable plate (6), and the movable plate (6) moves together with the yarn stop (7). The tension spring (5) is in a stretched state. When de-energized, the tension spring (5) resets, and drives the movable plate (6) and the yarn stop (7) to reset together.
4. The automatic yarn tail retaining device according to claim 1, which can be widely applied to high-speed grooved drum machines, is characterized in that: The outer casing (1) is located at the left or right end of the high-speed trough mill (9).