A yarn feeding device for a circular knitting machine

Abstract

This invention provides a yarn feeding device for a circular knitting machine, comprising: a base, on which a column, a plate, and a frame are fixedly connected to the upper surface of the base; a sleeve is fitted onto the surface of the column, with a support plate fixedly connected to the lower end of the sleeve; a limiting plate is fixedly connected to the upper end of the column; and a guide roller is movably connected to the upper end of the plate via a bearing. Two sets of fixed pulleys are movably connected to both sides of the inner cavity of the frame via bearings. A buffer groove is symmetrically formed in the middle of the inner cavity of the frame, with a trigger fixedly connected to the top of the buffer groove. A buffer block is slidably connected to the buffer groove via a guide block, and a locking rod is fixedly connected to the lower surface of the buffer block. This invention, through the cooperation of the plate, guide roller, frame, fixed pulleys, movable pulleys, buffer block, locking rod, main spring, trigger, and audible and visual alarm, can detect the yarn status in the yarn feeding device in real time, facilitating quick positioning by workers and improving the efficiency of yarn replacement or maintenance.

Description

Technical Field

[0001] This utility model relates to the field of yarn feeding technology, specifically to a yarn feeding device for a circular knitting machine. Background Technology

[0002] Because circular knitting machines have multiple loop-forming systems, high speed, high output, rapid pattern changes, good fabric quality, fewer processes, and strong product adaptability, their development has been rapid. A circular knitting machine consists of a frame, yarn feeding mechanism, transmission mechanism, lubrication and dust removal mechanism, electrical control mechanism, traction and take-up mechanism, and other auxiliary devices. During operation, the yarn in the yarn feeding mechanism is continuously fed as the machine runs. However, since the amount of yarn on the spools is limited, it will eventually run out, and in some unexpected situations, the yarn may break. If these issues are not addressed promptly, they will inevitably affect the weaving process of the circular knitting machine, resulting in defective products. Factories typically monitor the yarn condition in the yarn feeding mechanism manually, making it difficult for workers to detect when the yarn is used up or accidentally broken. Furthermore, the large number of spools in the yarn feeding mechanism increases the difficulty for workers to locate the faulty yarn, prolonging the time required for replacement or repair, thus reducing the production efficiency and quality of the circular knitting machine. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, a yarn feeding device for a circular knitting machine is provided to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, a yarn feeding device for a circular knitting machine is provided, comprising: a base, on which a column, a plate, and a frame are fixedly connected to the upper surface of the base respectively; a sleeve is fitted onto the surface of the column, a support plate is fixedly connected to the lower end of the sleeve, a limiting plate is fixedly connected to the upper end of the column, and a guide roller is movably connected to the upper end of the plate via a bearing; two sets of fixed pulleys are movably connected to both sides of the inner cavity of the frame via bearings; a buffer groove is symmetrically opened in the middle of the inner cavity of the frame, a trigger is fixedly connected to the top of the buffer groove, and a buffer block is slidably connected to the buffer groove via a guide block; a fitting rod is fixedly connected to the lower surface of the buffer block, a main spring is fitted onto the surface of the fitting rod, and a fitting groove is opened at the bottom of the buffer groove corresponding to the position of the fitting rod; a movable pulley is movably connected to the buffer block via a bearing; and audible and visual alarms are symmetrically connected to the upper surface of the frame.

[0005] Preferably, the end face of the fixed frame has a U-shaped structure, and the two sets of buffer grooves symmetrically opened on the inner side of the fixed frame are both rectangular structures. The guide grooves are opened on both sides of the buffer grooves relative to the guide blocks, and the guide grooves are long strip structures. At the same time, the two sets of fixed pulleys symmetrically connected at both ends of the inner cavity of the fixed frame are at the same horizontal height, and the groove cross section of the fixed pulley is an isosceles trapezoidal structure.

[0006] Preferably, the buffer block has a square structure, the size of the buffer block and the buffer groove are matched, and the two ends of the movable pulley are movably connected to the two sets of buffer blocks through bearings. At the same time, the fitting rod fixedly connected to the lower surface of the buffer block has a cylindrical structure, and the edge of the lower end of the fitting rod has a frustum-shaped structure.

[0007] Preferably, the fitting groove at the bottom of the inner cavity of the buffer groove has a cylindrical structure, while the opening at the upper end of the fitting groove has a frustum-shaped structure, and the inclined surface at the upper end of the fitting groove and the inclined surface at the lower end edge of the fitting rod are parallel to each other.

[0008] Preferably, there are two sets of upright plates, both sets of upright plates are elongated strip structures, and the guide rollers movably connected at the upper ends of the two sets of upright plates are cylindrical structures, and the limiting rings symmetrically connected at both ends of the guide rollers are circular ring structures, while the edges of the limiting rings are arc-shaped structures.

[0009] Preferably, the column has a cylindrical structure, the upper end of the column has a threaded structure, the limiting plate fixedly connected to the upper end of the column has a circular structure, the sleeve fitted on the surface of the column has a cylindrical structure, and the support plate fixedly connected to the lower end of the sleeve has a circular structure.

[0010] Preferably, the fixing plate screwed to the upper end of the column has a circular structure, while the fastening ring fixedly connected to the lower surface of the fixing plate has a cylindrical structure, and multiple sets of movable grooves are opened at equal intervals around the lower surface of the fastening ring in the circumferential direction, with ball bearings movably connected in the movable grooves.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: through the cooperation of the upright plate, guide roller, fixed frame, fixed pulley, movable pulley, buffer block, trigger, main spring and sound and light alarm, the yarn feeding device can promptly remind the worker when the yarn runs out or breaks accidentally. It can also help improve the efficiency of workers in quickly locating the fault among many spools, thereby improving the efficiency of yarn replacement or yarn reconnection, effectively shortening the time required for yarn replacement or repair, and ensuring the production efficiency and quality of the circular knitting machine. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of an embodiment of the present utility model.

[0013] Figure 2 This is a side view of the fixed frame according to an embodiment of the present utility model.

[0014] Figure 3 This is a top view of an embodiment of the present utility model.

[0015] Figure 4 This is a schematic diagram of the sleeve and column structure of an embodiment of the present utility model.

[0016] In the diagram: 1. Base; 2. Support plate; 3. Sleeve; 4. Fastening ring; 5. Fixing plate; 6. Limiting plate; 7. Column; 8. Upright plate; 9. Guide roller; 10. Limiting ring; 11. Fixed pulley; 12. Trigger; 13. Audible and visual alarm; 14. Buffer groove; 15. Movable pulley; 16. Guide groove; 17. Fitting rod; 18. Fixing frame; 19. Buffer block. Detailed Implementation

[0017] Reference Figures 1 to 4 As shown, this utility model provides a yarn feeding device for a circular knitting machine, including: a base 1, on which a column 7, a plate 8, and a frame 18 are fixedly connected to the upper surface of the base 1 respectively. A sleeve 3 is fitted onto the surface of the column 7, and a support plate 2 is fixedly connected to the lower end of the sleeve 3. A limiting plate 6 is fixedly connected to the upper end of the column 7. A guide roller 9 is movably connected to the upper end of the plate 8 through a bearing. Two sets of fixed pulleys 11 are movably connected to both sides of the inner cavity of the frame 18 through bearings. A buffer groove 14 is symmetrically opened in the middle of the inner cavity of the frame 18. A trigger 12 is fixedly connected to the top of the buffer groove 14. At the same time, a buffer block 19 is slidably connected to the buffer groove 14 through a guide block. A fitting rod 17 is fixedly connected to the lower surface of the buffer block 19. A main spring is fitted onto the surface of the fitting rod 17. A fitting groove is opened at the bottom of the buffer groove 14 corresponding to the position of the fitting rod 17. A movable pulley 15 is movably connected to the buffer block 19 through a bearing. A sound and light alarm 13 is symmetrically connected to the upper surface of the frame 18.

[0018] In this embodiment, the yarn feeding device is installed in a suitable position on the circular knitting machine. First, the yarn spool is fitted onto the surface of the sleeve 3. Then, the fixing plate 5 is screwed onto the upper end of the column 7. The fastening ring 4 on the lower surface of the fixing plate 5 can abut against the upper surface of the yarn spool through ball bearings to prevent the device from accidentally shaking during the yarn feeding process of the circular knitting machine. Then, the yarn end of the yarn spool is passed sequentially through the guide roller 9, the fixed pulley 11 on the left side of the fixing frame 18, the movable pulley 15, and the fixed pulley 11 on the right side of the fixing frame 18. After the yarn is installed in the circular knitting machine, the tension of the yarn will drive the movable pulley 15 to move downward, and the buffer block 19 will synchronously squeeze the main... The spring and the buffer block 19 will disengage from the trigger 12, causing the audible and visual alarm 13 on the upper surface of the fixed frame 18 to be in the off state. When the yarn is used up or breaks accidentally, the part of the yarn inside the fixed frame 18 will lose tension. Then, the movable pulley 15 and the buffer block 19 will reset under the action of the compressed main spring, and the buffer block 19 will re-abut against the trigger 12, so that the audible and visual alarm 13 electrically connected to the trigger 12 can be powered on and activated, alerting the surrounding workers. It can also help workers quickly locate the fault position among many spools, improve the efficiency of workers to replace or reconnect yarn, and ensure the working efficiency and quality of the circular knitting machine.

[0019] As a preferred embodiment, the end face of the fixed frame 18 has a U-shaped structure, and the two sets of buffer grooves 14 symmetrically opened on the inner side of the fixed frame 18 are both rectangular in structure. The guide grooves 16 are opened on both sides of the buffer grooves 14 relative to the guide blocks. The guide grooves 16 are long strips. At the same time, the two sets of fixed pulleys 11 symmetrically connected at both ends of the inner cavity of the fixed frame 18 are at the same horizontal height, and the groove cross section of the fixed pulleys 11 is an isosceles trapezoidal structure.

[0020] In this embodiment, as Figure 1 , Figure 2 and Figure 3 The buffer groove 14 and guide groove 16 are adapted to the dimensions of the buffer block 19 and guide block, respectively, thereby helping to enhance the stability of the movable pulley 15 when it moves within the fixed frame 18. At the same time, the structure of the groove of the fixed pulley 11 can help reduce the probability of yarn wear in the groove of the fixed pulley 11, ensuring the quality of the yarn.

[0021] In a preferred embodiment, the buffer block 19 has a square structure, the size of the buffer block 19 and the buffer groove 14 are matched, and the two ends of the movable pulley 15 are movably connected to the two sets of buffer blocks 19 through bearings. Meanwhile, the fitting rod 17 fixedly connected to the lower surface of the buffer block 19 has a cylindrical structure, and the edge of the lower end of the fitting rod 17 has a frustum-shaped structure.

[0022] In this embodiment, as Figure 1 , Figure 2 and Figure 3 The fitting rod 17 helps guide the compression path of the main spring, preventing the main spring from bending during the compression process of the buffer block 19, and thus helping to extend the service life of the main spring.

[0023] In a preferred embodiment, the fitting groove at the bottom of the inner cavity of the buffer groove 14 has a cylindrical structure, while the opening at the upper end of the fitting groove has a frustum-shaped structure, and the inclined surface at the upper end of the fitting groove and the inclined surface at the lower edge of the fitting rod 17 are parallel to each other.

[0024] In this embodiment, as Figure 1 , Figure 2 and Figure 3 The structure at the lower end of the fitting rod 17 and the structure at the upper opening of the fitting groove are matched to help reduce the difficulty of inserting the fitting rod 17. Moreover, the size of the fitting groove and the fitting rod 17 are matched to help enhance the stability of the buffer block 19 when it moves.

[0025] As a preferred embodiment, there are two sets of vertical plates 8. Both sets of vertical plates 8 are elongated strip structures. The guide rollers 9 connected to the upper ends of the two sets of vertical plates 8 are cylindrical structures. The limiting rings 10 connected symmetrically at both ends of the guide rollers 9 are circular ring structures, and the edges of the limiting rings 10 are arc-shaped structures.

[0026] In this embodiment, as Figure 1 and Figure 3 The setting of the limiting ring 10 can effectively limit the movement range of the yarn on the surface of the guide roller 9, thereby ensuring that the yarn can pass smoothly through the fixed pulley 11 and the movable pulley 15 to complete the yarn feeding step of the circular knitting machine. Moreover, the arc-shaped structure of the edge of the limiting ring 10 can also help reduce the probability of yarn wear.

[0027] In a preferred embodiment, the column 7 has a cylindrical structure, the upper end of the column 7 has a threaded structure, the limiting plate 6 fixedly connected to the upper end of the column 7 has a circular structure, the sleeve 3 sleeved on the surface of the column 7 has a cylindrical structure, and the support plate 2 fixedly connected to the lower end of the sleeve 3 has a circular structure.

[0028] In this embodiment, as Figure 1 , Figure 3 and Figure 4 The setting of the limiting plate 6 can effectively limit the movement range of the sleeve 3, so that the sleeve 3 can be stably connected to the surface of the column 7. The support plate 2 fixedly connected to the lower end of the sleeve 3 can support the yarn bobbin, thereby improving the flexibility of the yarn bobbin when rotating in conjunction with the sleeve 3.

[0029] In a preferred embodiment, the fixing plate 5 screwed to the upper end of the column 7 has a circular structure, while the fastening ring 4 fixedly connected to the lower surface of the fixing plate 5 has a cylindrical structure, and multiple sets of movable grooves are opened at equal intervals around the lower surface of the fastening ring 4 in the circumferential direction, with ball bearings movably connected in the movable grooves.

[0030] In this embodiment, as Figure 1 , Figure 3 and Figure 4 The setting of the fixing plate 5 and the fastening ring 4 can help enhance the stability when the yarn bobbin is sleeved on the surface of the sleeve 3, while the ball bearings connected to the lower surface of the fastening ring 4 can ensure the flexibility of the yarn bobbin when rotating, and ensure that the yarn on the surface of the yarn bobbin can be smoothly discharged.

Claims

1. A yarn feeding device for a circular knitting machine, comprising: The base (1) is characterized in that: a column (7), a plate (8) and a fixed frame (18) are fixedly connected to the upper surface of the base (1), and a sleeve (3) is sleeved on the surface of the column (7). A support plate (2) is fixedly connected to the lower end of the sleeve (3), and a limiting plate (6) is fixedly connected to the upper end of the column (7). A guide roller (9) is movably connected to the upper end of the plate (8) through a bearing. Two sets of fixed pulleys (11) are movably connected to both sides of the inner cavity of the fixed frame (18) through bearings. Buffer grooves are symmetrically opened in the middle of the inner cavity of the fixed frame (18). (14) A trigger (12) is fixedly connected to the top of the buffer groove (14). At the same time, the buffer block (19) is slidably connected in the buffer groove (14) through the guide block. The lower surface of the buffer block (19) is fixedly connected to the fitting rod (17). The surface of the fitting rod (17) is sleeved with the main spring. The bottom of the buffer groove (14) is opened with a fitting groove corresponding to the position of the fitting rod (17). The movable pulley (15) is movably connected to the buffer block (19) through the bearing. The upper surface of the fixed frame (18) is symmetrically connected to the sound and light alarm (13).

2. The yarn feeding device for a circular knitting machine according to claim 1, characterized in that, The end face of the fixed frame (18) is U-shaped. The two sets of buffer grooves (14) symmetrically opened on the inner side of the fixed frame (18) are both rectangular. The guide grooves (16) are opened on both sides of the buffer grooves (14) relative to the guide blocks. The guide grooves (16) are long strips. At the same time, the two sets of fixed pulleys (11) symmetrically connected at both ends of the inner cavity of the fixed frame (18) are at the same horizontal height. The groove cross section of the fixed pulleys (11) is an isosceles trapezoid.

3. The yarn feeding device for a circular knitting machine according to claim 1, characterized in that, The buffer block (19) has a square structure. The size of the buffer block (19) and the buffer groove (14) are matched. The two ends of the movable pulley (15) are movably connected to the two sets of buffer blocks (19) through bearings. Meanwhile, the fitting rod (17) fixedly connected to the lower surface of the buffer block (19) has a cylindrical structure, and the edge of the lower end of the fitting rod (17) has a frustum structure.

4. The yarn feeding device for a circular knitting machine according to claim 1, characterized in that, The fitting groove at the bottom of the inner cavity of the buffer groove (14) is cylindrical, while the opening at the upper end of the fitting groove is frustum-shaped. The inclined surface at the upper end of the fitting groove and the inclined surface at the lower edge of the fitting rod (17) are parallel to each other.

5. The yarn feeding device for a circular knitting machine according to claim 1, characterized in that, There are two sets of vertical plates (8). Both sets of vertical plates (8) are long strip structures. The guide rollers (9) connected to the upper ends of the two sets of vertical plates (8) are cylindrical structures. The limiting rings (10) symmetrically connected at both ends of the guide rollers (9) are circular ring structures. At the same time, the edges of the limiting rings (10) are arc-shaped structures.

6. The yarn feeding device for a circular knitting machine according to claim 1, characterized in that, The column (7) has a cylindrical structure, and the upper end of the column (7) has a threaded structure. The limiting plate (6) fixedly connected to the upper end of the column (7) has a circular structure, and the sleeve (3) sleeved on the surface of the column (7) has a cylindrical structure. The support plate (2) fixedly connected to the lower end of the sleeve (3) has a circular structure.

7. The yarn feeding device for a circular knitting machine according to claim 1, characterized in that, The fixing plate (5) screwed to the upper end of the column (7) has a circular structure, while the fastening ring (4) fixedly connected to the lower surface of the fixing plate (5) has a cylindrical structure. The lower surface of the fastening ring (4) has multiple sets of movable grooves at equal intervals around the circumference, and the movable grooves are connected to the ball bearings.

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