Thread feeding quantity stable control type thread feeding mechanism and lace embroidery machine

Abstract

The invention relates to the technical field of embroidery machine auxiliary equipment, in particular to a thread feeding mechanism capable of stably controlling the thread feeding amount and a lace embroidery machine. According to the technical scheme, the automatic feeding device comprises a rack and a bobbin rotationally installed on the rack, a needle bar mechanism is installed on the rack and comprises a needle head, the automatic feeding device further comprises two conveying assemblies installed on the rack, and each conveying assembly comprises two driving wheels rotationally installed on the rack; and the stretching and tightening part is arranged on the rack and is used for periodically stretching and tightening the rope according to the lifting state of the needle head. According to the real-time lifting state of the needle head, power on-off of the two transmission assemblies is automatically controlled through the conversion assembly, so that the rotating direction of the wire feeding wheel is intelligently switched, and the core problem that the wire feeding action is not matched with the movement phase of the needle rod is effectively solved; accurate synergy of feeding the thread when the needle stabs downwards and tightening the stitch when the needle ascends is achieved, and the defects of needle skipping, thread breaking, uneven stitch and the like are overcome.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment technology for embroidery machines, and in particular to a thread feeding mechanism with stable thread feeding control and a lace embroidery machine. Background Technology

[0002] In the traditional lace embroidery machine field, the stability of the thread feeding mechanism is the core technical challenge that determines the quality of the final product. Lace embroidery is a delicate process that involves embroidering on water-soluble paper and then dissolving the base fabric to form independent lace trim. During its production, it is often necessary to automatically switch between different types of threads, such as polyester thread and nylon thread, which places extremely high demands on thread feeding control.

[0003] Traditional thread feeding mechanisms often employ passive or simple active feeding methods, with a constant or preset thread feeding amount. This fails to effectively address the dynamic and inconsistent thread feeding demands generated by the reciprocating motion of the embroidery needle bar. Specifically, during the downward needle insertion stage, a large amount of thread needs to be fed rapidly to form a stable loop for the rotary hook to catch. At this time, the thread is in a loose state. However, in the latter half of the process, as the needle rises and the rotary hook wraps around the loop and tightens the stitch, the thread feeding must be stopped immediately, or even a small amount of reverse thread recovery must be performed to help tighten the stitch and prevent the thread from floating on the back. If the thread feeding action is not synchronized with the needle bar movement, it can easily lead to defects such as skipped stitches, broken threads, and uneven stitch tightness. This is a fatal flaw for lace products that require water-soluble treatment to reveal the stitches themselves. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the background art by proposing a thread feeding mechanism and lace embroidery machine that dynamically adjusts the thread feeding direction based on the real-time position of the needle bar, precisely pushes the thread when it needs to be fed, decisively brakes when it needs to be stopped, and slightly retracts it when it needs to be withdrawn, thereby ensuring a perfect match between the thread feeding efficiency and the needle bar movement requirements under any needle speed and thread material conditions.

[0005] On one hand, this invention proposes a stable wire feeding mechanism, including a frame, a spool rotatably mounted on the frame, a needle bar mechanism mounted on the frame, the needle bar mechanism including a needle, and further including: two sets of conveying components mounted on the frame, each conveying component including two drive wheels rotatably mounted on the frame; a stretching and tightening component mounted on the frame that periodically stretches and tightens the wire according to the lifting and lowering state of the needle, the stretching and tightening component including a motor and a transmission shaft fixedly mounted on the output shaft of the motor; the stretching and tightening component further including two sets of transmission components, one end of which is connected to the transmission shaft and the other end of which is connected to one of the drive wheels, one of the transmission components being connected to the transmission shaft, and the other transmission component being connected to the transmission shaft through a reversing component, the reversing component causing the two sets of transmission components to rotate in opposite directions; each transmission component including a circuit breaker component that controls the on / off state of the transmission circuit of the transmission component; and a conversion component mounted on the frame, the conversion component being connected to the needle bar mechanism, the conversion component controlling the on / off state of the two sets of circuit breaker components according to the lifting and lowering state of the needle bar mechanism.

[0006] Optionally, the transmission assembly includes a first pulley fixedly mounted on a drive shaft or reversing assembly, a variable-diameter pulley rotatably mounted on a frame, a first transmission belt installed between the variable-diameter pulley and the first pulley, a tensioning assembly for tensioning the first transmission belt installed on the frame, and a first conveying rod coaxially fixedly mounted on the variable-diameter pulley; a second pulley fixedly mounted on one of the drive wheels, a third pulley rotatably mounted on the frame, a second transmission belt installed between the second pulley and the third pulley, and a second conveying rod fixedly mounted on the third pulley; the circuit breaking assembly controls the connection state of the first and second conveying rods; the reversing assembly includes a first gear fixedly mounted on a drive shaft, a second gear rotatably mounted on the frame and meshing with the first gear, and a first pulley and the second gear coaxially fixedly connected.

[0007] Optionally, the variable diameter pulley includes two baffles rotatably mounted on the frame. The baffles are provided with multiple sliding grooves. A support block is slidably mounted in the sliding groove. An adjusting rod is rotatably mounted on the support block. A connecting plate is rotatably mounted on the frame. The connecting plate is rotatably connected to the multiple adjusting rods. A lead screw that is threadedly connected to the frame is rotatably mounted on the connecting plate.

[0008] Optionally, the tensioning assembly includes a wheel seat slidably mounted on the frame, a tensioning wheel rotatably mounted on the wheel seat, and a first spring fixedly mounted between the wheel seat and the frame.

[0009] Optionally, the circuit breaker assembly includes a connecting plate fixedly mounted on the first conveying rod, a push plate fixedly mounted on the connecting plate, a synchronizing cylinder fixedly mounted on the second conveying rod and a mounting plate slidably mounted thereon, a sliding sleeve fixedly mounted on the mounting plate, a limit rod slidably mounted inside the sliding sleeve, multiple second springs fixedly mounted between the limit rod and the sliding sleeve, and a slot on the synchronizing cylinder for the limit rod to pass through.

[0010] Optionally, the needle bar mechanism includes a crank rotatably mounted on the frame, a connecting rod rotatably mounted on the crank, and a guide block slidably mounted on the frame, wherein the needle tip is fixedly connected to the guide block.

[0011] Optionally, the conversion assembly includes two first transmission cylinders fixedly mounted on a frame, and a first sealing block slidably and sealingly mounted inside the first transmission cylinder. A first shaft is fixedly mounted on the first sealing block, and a rolling element is rotatably mounted on the first shaft. A second transmission cylinder is fixedly mounted on the frame, and a second sealing block is slidably and sealingly connected inside the second transmission cylinder. A second shaft is fixedly mounted on the second sealing block, and the second shaft is fixedly connected to the guide block. Both ends of the first and second transmission cylinders are connected by pipes, and the pipes on the two first transmission cylinders are connected in opposite directions. Both the first and second transmission cylinders are filled with a transmission medium.

[0012] Optionally, a support base is fixedly installed on the frame, and a support column for supporting the bobbin is rotatably installed on the support base.

[0013] Optionally, a third gear is fixedly mounted on the drive wheel, and two third gears located on the same set of conveying components mesh with each other.

[0014] On the other hand, this application proposes a lace embroidery machine, including the aforementioned thread feeding mechanism with stable thread feeding control.

[0015] In summary, this application includes at least one of the following beneficial technical effects: By using a switching component to sense the lifting and lowering state of the needle bar mechanism in real time, and utilizing hydraulic transmission medium to drive the on / off control of the circuit breaker component, it ensures that thread feeding is initiated when the needle is lowering and thread take-up is switched when the needle is rising. This mechanism fundamentally solves the problems of skipped needles and thread breakage caused by phase asynchrony in traditional thread feeding mechanisms, significantly improving the stability of the embroidery process and the stitch quality; the transmission component is equipped with a variable diameter pulley, and its effective transmission diameter can be changed by adjusting the screw, thereby adjusting the transmission ratio and realizing the control of thread feeding speed and take-up speed. Independent control of line speed is particularly suitable for threads with varying elasticity, ensuring stable thread feeding and tightening in different materials. The conversion component uses incompressible liquid as the transmission medium to convert the minute displacement of the needle bar into a large-stroke control signal for the circuit breaker component. It has the advantages of fast response, no lag, and strong anti-interference, making it especially suitable for the dynamic control requirements of high-precision embroidery machines. Through intelligent thread feeding control, it significantly reduces defects such as skipped stitches, thread breaks, and uneven stitches. Especially in processes such as water-soluble lace where stitch consistency is extremely important, it effectively improves product yield and production efficiency. Attached Figure Description

[0016] Figure 1 Schematic diagram of the wire feeding mechanism Figure 1 ; Figure 2 Schematic diagram of the wire feeding mechanism Figure 2 ; Figure 3 This is a structural schematic diagram of the tensioning and tightening component; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a schematic diagram of the conveying component. Figure 6 This is a schematic diagram of the tensioning assembly. Figure 7 for Figure 6 A partial enlarged view of point B in the middle; Figure 8 Schematic diagram of the transmission assembly Figure 1 ; Figure 9 Schematic diagram of the transmission assembly Figure 2 ; Figure 10 This is a schematic diagram of the circuit breaker assembly; Figure 11 for Figure 10 A partial enlarged view of point C in the middle; Figure 12 This is a schematic diagram of the needle bar mechanism and the conversion assembly.

[0017] Reference numerals: 1. Frame; 11. Support base; 12. Support column; 2. Wire drum; 3. Conveying assembly; 31. Drive wheel; 32. Third gear; 4. Tensioning and tightening component; 41. Motor; 411. Drive shaft; 42. Transmission assembly; 421. First pulley; 422. Variable diameter pulley; 4221. Baffle; 4222. Slide groove; 4223. Support block; 4224. Adjusting rod; 4225. Connecting disc; 4226. Lead screw; 423. First transmission belt; 424. First conveying rod; 425. Second pulley; 426. Third pulley; 427. Second transmission belt; 428. Second conveying rod; 43. Circuit breaker assembly; 431. Connecting plate; 432. Push plate; 433. Synchronizing cylinder; 434. Mounting plate; 435. Sliding sleeve; 436. Limiting rod; 437. Second spring; 438. Groove; 44. Conversion assembly; 441. First transmission cylinder; 442. First sealing block; 443. First shaft; 444. Rolling element; 445. Second transmission cylinder; 446. Second sealing block; 447. Second shaft; 448. Pipe; 45. Tensioning assembly; 451. Wheel seat; 452. Tensioning wheel; 453. First spring; 46. Reversing assembly; 461. First gear; 462. Second gear; 5. Needle bar mechanism; 51. Crank; 52. Connecting rod; 53. Guide block; 54. Needle. Detailed Implementation

[0018] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] Example: Figure 1 , Figure 2 as well as Figure 12 As shown, the present invention proposes a wire feeding mechanism with stable wire feeding control, including a frame 1 and a wire drum 2 rotatably mounted on the frame 1. A support base 11 is fixedly mounted on the frame 1, and a support column 12 is rotatably mounted on the support base 11. The support column 12 supports the wire drum 2 and facilitates the rotation of the wire drum 2.

[0020] Furthermore, a needle bar mechanism 5 is installed on the frame 1. The needle bar mechanism 5 includes a needle head 54 and a crank 51 rotatably mounted on the frame 1, a connecting rod 52 rotatably mounted on the crank 51, and a guide block 53 slidably mounted on the frame 1. The needle head 54 is fixedly connected to the guide block 53. The crank 51 is driven to rotate by a drive device. The rotating crank 51 will drive the guide block 53 to reciprocate through the connecting rod 52. The moving guide block 53 can drive the needle head 54 to move up and down, thereby performing embroidery work.

[0021] As one implementation method, such as Figure 2 and Figure 5As shown, the wire feeding mechanism in this embodiment also includes two sets of conveying components 3 mounted on the frame 1. The conveying components include two drive wheels 31 rotatably mounted on the frame 1. A third gear 32 is fixedly mounted on the drive wheel 31. The two third gears 32 located on the same set of conveying components 3 mesh with each other, so that the two drive wheels 31 can rotate synchronously and in opposite directions. The two drive wheels 31 press the wire together. The wire can be moved by the friction between the wire and the drive wheel 31. The wire on the spool 2 will move along the axis of the spool 2. By setting two sets of conveying components 3, the wire between the two conveying components 3 is always kept in a vertical state. The lower conveying component 3 serves as the power source for conveying, so that the wire can be conveyed stably.

[0022] As one implementation method, such as Figures 3 to 9 As shown, the wire feeding mechanism also includes a stretching and tightening component 4 mounted on the frame 1, which periodically stretches and tightens the wire according to the lifting state of the needle 54. The stretching and tightening component 4 includes a motor 41 and a transmission shaft 411 fixedly mounted on the output shaft of the motor 41. The motor 41 can drive the transmission shaft 411 to rotate. When the motor 41 drives the drive wheel 31 to rotate in the forward direction, the wire will be stretched. When the motor 41 drives the drive wheel 31 to move in the reverse direction, the wire can be retracted.

[0023] Furthermore, the tensioning component 4 also includes two sets of transmission components 42, one end of which is connected to the transmission shaft 411 and the other end of which is connected to one of the drive wheels 31. One transmission component 42 is connected to the transmission shaft 411, and the other transmission component 42 is connected to the transmission shaft 411 through a reversing component 46. The reversing component 46 makes the two sets of transmission components 42 rotate in opposite directions. Both transmission components 42 are connected to the transmission shaft 411, and the left and right sides of the reversing component 46 can make the output directions of the two transmission components 42 opposite. Therefore, when different transmission components 42 drive the drive wheel 31, the rotation direction of the drive wheel 31 will also be opposite. By periodically alternating the driving of the drive wheel 31 by the two transmission components 42, the wire can be periodically stretched and retracted.

[0024] Furthermore, the transmission assembly 42 includes a first pulley 421 fixedly mounted on the transmission shaft 411 or the reversing assembly 46, and a variable diameter pulley 422 rotatably mounted on the frame 1. A first transmission belt 423 is installed between the variable diameter pulley 422 and the first pulley 421. When the transmission shaft 411 rotates, it will drive the first pulley 421 to move, and then drive the variable diameter pulley 422 to rotate through the first transmission belt 423. When the inner diameter of the variable diameter pulley 422 changes, the transmission ratio between the first pulley 421 and the variable diameter pulley 422 can be changed, thereby changing the transmission ratio of the subsequent output end. This allows the drive wheel 31 to maintain different rotation speeds when feeding and taking in wires, which can be adjusted appropriately according to requirements and different elastic wires.

[0025] The frame 1 is equipped with a tensioning assembly 45 for tensioning the first transmission belt 423. A first conveying rod 424 is coaxially fixedly mounted on the variable diameter pulley 422, which will drive the first conveying rod 424 to rotate. A second pulley 425 is fixedly mounted on one of the drive wheels 31, and a third pulley 426 is rotatably mounted on the frame 1. A second transmission belt 427 is installed between the second pulley 425 and the third pulley 426. A second conveying rod 428 is fixedly mounted on the third pulley 426. When the first conveying rod 424 and the second conveying rod 428 are connected, the third pulley 426 will be driven to rotate. Through the transmission of the second transmission belt 427, the second pulley 425 can be rotated, thereby driving the drive wheel 31 to rotate.

[0026] It is worth noting that the reversing assembly 46 includes a first gear 461 fixedly mounted on the drive shaft 411 and a second gear 462 rotatably mounted on the frame 1 and meshing with the first gear 461. One of the first pulleys 421 is coaxially and fixedly connected to the second gear 462. Since one of the first pulleys 421 is directly connected to the drive shaft 411, the rotation direction of one of the first pulleys 421 is the same as that of the drive shaft 411. After the other first pulley 421 is driven by the first gear 461 and the second gear 462, its rotation direction will change, so that the rotation direction of the other first pulley 421 is opposite to that of the drive shaft 411.

[0027] The tensioning assembly 45 includes a wheel seat 451 slidably mounted on the frame 1, a tensioning wheel 452 rotatably mounted on the wheel seat 451, and a first spring 453 fixedly mounted between the wheel seat 451 and the frame 1. Since the inner diameter of the variable diameter pulley 422 will change as needed, and the first transmission belt 423 needs to be kept in a taut state at all times, the first spring 453 can drive the tensioning wheel 452 to tension the first transmission belt 423, thus keeping the first transmission belt 423 in a taut state at all times.

[0028] It should be noted that the variable diameter pulley 422 includes two baffles 4221 rotatably mounted on the frame 1. The baffles 4221 are provided with multiple sliding grooves 4222, and support blocks 4223 are slidably installed in the sliding grooves 4222. The multiple support blocks 4223 support the first transmission belt 423. Adjusting rods 4224 are rotatably mounted on the support blocks 4223. A connecting plate 4225 is rotatably mounted on the frame 1. The connecting plate 4225 is rotatably connected to the multiple adjusting rods 4224. A lead screw 4226 threadedly connected to the frame 1 is rotatably mounted on the connecting plate 4225. When the transmission requirements change, the lead screw 4226 is rotated to move along its axis, which drives the connecting plate 4225 to move. Then, the adjusting rods 4224 drive the multiple support blocks 4223 to move, thereby changing the size of the circle formed by the multiple support blocks 4223 and thus changing the transmission ratio.

[0029] like Figures 10 to 11 As shown, in this embodiment, the transmission assembly 42 includes a circuit breaker assembly 43, which controls the connection state of the first conveying rod 424 and the second conveying rod 428. The circuit breaker assembly 43 includes a connecting plate 431 fixedly installed on the first conveying rod 424, and a push plate 432 fixedly installed on the connecting plate 431. The push plate 432 will rotate with the rotation of the variable diameter pulley 422 and the first conveying rod 424. A synchronous cylinder 433 is fixedly installed on the second conveying rod 428 and a mounting plate 434 is slidably installed on it. A sliding sleeve 435 is fixedly installed on the mounting plate 434, and a limit rod 43 is slidably installed inside the sliding sleeve 435. 6. Multiple second springs 437 are fixedly installed between the limiting rod 436 and the sliding sleeve 435. The synchronous cylinder 433 is provided with a slot 438 for the limiting rod 436 to pass through. When the mounting plate 434 moves, it will drive the limiting rod 436 to move, thereby allowing the limiting rod 436 to enter the synchronous cylinder 433 through the slot 438. At this time, the rotating push plate 432 can drive the limiting rod 436 to rotate synchronously, thereby causing the second conveying rod 428 to rotate synchronously. Conversely, when the limiting rod 436 does not enter the synchronous cylinder 433, the first conveying rod 424 will not be able to drive the second conveying rod 428 to rotate.

[0030] As one implementation method, such as Figure 12As shown, the wire feeding mechanism in this embodiment also includes a conversion assembly 44 mounted on the frame 1. The conversion assembly 44 is connected to the needle bar mechanism 5. The conversion assembly 44 controls the on / off state of the two sets of circuit breaker assemblies 43 according to the lifting state of the needle bar mechanism 5. The conversion assembly 44 includes two first transmission cylinders 441 fixedly mounted on the frame 1 and a first sealing block 442 slidably and sealingly mounted inside the first transmission cylinders 441. A first shaft 443 is fixedly mounted on the first sealing block 442, and a first shaft 443 is rotatably mounted on the first shaft 443. The machine is equipped with a rolling element 444. A second transmission cylinder 445 is fixedly installed on the frame 1. A second sealing block 446 is slidably and sealed inside the second transmission cylinder 445. A second shaft 447 is fixedly installed on the second sealing block 446. The second shaft 447 is fixedly connected to the guide block 53. The lifting and lowering of the guide block 53 will drive the second shaft 447 to lift and lower, thereby driving the second sealing block 446 to move, thus changing the size of the space on both sides inside the second transmission cylinder 445 and separated by the second sealing block 446.

[0031] It should be noted that both ends of the first transmission cylinder 441 and the second transmission cylinder 445 are connected by pipes 448. Both the first transmission cylinder 441 and the second transmission cylinder 445 are filled with a transmission medium, which is a liquid that cannot be compressed under working conditions. When the second sealing block 446 moves up and down, it will squeeze the hydraulic medium at different positions into the different first transmission cylinders 441. Since the pipes on the two first transmission cylinders 441 are connected in opposite directions, the different first shafts 443 move in opposite directions. This causes one limit rod 436 to enter the synchronous cylinder 433 and the other limit rod 436 to leave the synchronous cylinder 433, so that only one transmission component 42 can be connected to the drive wheel 31. This allows the rotation direction of the drive wheel 31 to be linked with the lifting direction of the needle 54, which can precisely control the thread feeding and releasing state and speed.

[0032] This application also proposes a lace embroidery machine, including the above-mentioned thread feeding mechanism with stable thread feeding control, which converts the up-and-down reciprocating motion of the needle bar 5 into precise control of the thread feeding action. The guide block 53 of the needle bar mechanism 5 moves up and down, driving the second shaft 447 and the second sealing block 446 of the conversion component 44 to squeeze the hydraulic transmission medium. The medium pushes the first sealing block 442 and the first shaft 443 in the two first transmission cylinders 441 to move in opposite directions through the pipe 448, thereby controlling the on and off states of the two circuit breaking components 43. The motor 41 drives the two sets of transmission components 42 with opposite rotation directions through the transmission shaft 411 and the reversing component 46. According to the position of the needle 54, the conversion component 44 will connect the power path of one set of transmission components 42, so that it drives the drive wheel 31 to perform "thread feeding" or "thread take-up", while disconnecting the other set, thereby realizing the automatic and periodic switching of thread feeding and take-up functions, which is synchronized with the up-and-down movement of the embroidery needle.

[0033] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A wire feeding mechanism with stable wire feeding control, comprising a frame (1) and a wire spool (2) rotatably mounted on the frame (1), wherein a needle bar mechanism (5) is mounted on the frame (1), and the needle bar mechanism (5) includes a needle head (54), characterized in that, Also includes: Two sets of conveying assemblies (3) are mounted on the frame (1). The conveying assemblies include two drive wheels (31) rotatably mounted on the frame (1). A tensioning and tightening component (4) is mounted on the frame (1) to periodically stretch and tighten the rope according to the lifting state of the needle (54). The tensioning and tightening component (4) includes a motor (41) and a transmission shaft (411) fixedly mounted on the output shaft of the motor (41). The tensioning and tightening component (4) also includes two sets of transmission assemblies (42) connected at one end to the transmission shaft (411) and at the other end to one of the drive wheels (31). Connected to the drive shaft (411), another drive assembly (42) is connected to the drive shaft (411) via a reversing assembly (46), the reversing assembly (46) causing the two sets of drive assemblies (42) to rotate in opposite directions; the drive assembly (42) includes a circuit breaker assembly (43), the circuit breaker assembly (43) controls the on / off state of the drive line of the drive assembly (42); a conversion assembly (44) is installed on the frame (1), the conversion assembly (44) is connected to the needle bar mechanism (5), the conversion assembly (44) controls the on / off state of the two sets of circuit breaker assemblies (43) according to the lifting state of the needle bar mechanism (5).

2. The wire feeding mechanism with stable wire feeding control according to claim 1, characterized in that, The transmission assembly (42) includes a first pulley (421) fixedly mounted on a transmission shaft (411) or a reversing assembly (46), and a variable diameter pulley (422) rotatably mounted on a frame (1). A first transmission belt (423) is installed between the variable diameter pulley (422) and the first pulley (421). A tensioning assembly (45) for tensioning the first transmission belt (423) is installed on the frame (1). A first conveying rod (424) is coaxially fixedly mounted on the variable diameter pulley (422). A second pulley (425) is fixedly mounted on one of the drive wheels (31), and a third pulley is rotatably mounted on the frame (1). (426), a second transmission belt (427) is installed between the second pulley (425) and the third pulley (426), and a second conveying rod (428) is fixedly installed on the third pulley (426); the circuit breaker assembly (43) controls the connection state of the first conveying rod (424) and the second conveying rod (428); the reversing assembly (46) includes a first gear (461) fixedly installed on the transmission shaft (411) and a second gear (462) rotatably installed on the frame (1) and meshing with the first gear (461), wherein the first pulley (421) and the second gear (462) are coaxially fixedly connected.

3. The wire feeding mechanism with stable wire feeding control according to claim 2, characterized in that, The variable diameter pulley (422) includes two baffles (4221) rotatably mounted on the frame (1). The baffles (4221) are provided with multiple sliding grooves (4222). A support block (4223) is slidably mounted in the sliding groove (4222). An adjusting rod (4224) is rotatably mounted on the support block (4223). A connecting plate (4225) is rotatably mounted on the frame (1). The connecting plate (4225) is rotatably connected to the multiple adjusting rods (4224). A lead screw (4226) that is threadedly connected to the frame (1) is rotatably mounted on the connecting plate (4225).

4. The wire feeding mechanism with stable wire feeding control according to claim 3, characterized in that, The tensioning assembly (45) includes a wheel seat (451) slidably mounted on the frame (1), a tensioning wheel (452) rotatably mounted on the wheel seat (451), and a first spring (453) fixedly mounted between the wheel seat (451) and the frame (1).

5. The wire feeding mechanism with stable wire feeding control according to claim 4, characterized in that, The circuit breaker assembly (43) includes a connecting plate (431) fixedly installed on the first conveying rod (424), a push plate (432) fixedly installed on the connecting plate (431), a synchronizing cylinder (433) fixedly installed on the second conveying rod (428) and a mounting plate (434) slidably installed thereon, a sliding sleeve (435) fixedly installed on the mounting plate (434), a limiting rod (436) slidably installed inside the sliding sleeve (435), a plurality of second springs (437) fixedly installed between the limiting rod (436) and the sliding sleeve (435), and a slot (438) provided on the synchronizing cylinder (433) for the limiting rod (436) to pass through.

6. The wire feeding mechanism with stable wire feeding control according to claim 5, characterized in that, The needle bar mechanism (5) includes a crank (51) rotatably mounted on the frame (1), a connecting rod (52) rotatably mounted on the crank (51), and a guide block (53) slidably mounted on the frame (1). The needle (54) is fixedly connected to the guide block (53).

7. The wire feeding mechanism with stable wire feeding control according to claim 1, characterized in that, The conversion assembly (44) includes two first transmission cylinders (441) fixedly mounted on the frame (1), and a first sealing block (442) slidably and sealed inside the first transmission cylinder (441). A first shaft (443) is fixedly mounted on the first sealing block (442), and a rolling element (444) is rotatably mounted on the first shaft (443). A second transmission cylinder (445) is fixedly mounted on the frame (1). A second sealing block (446) is slidably and sealed inside the second transmission cylinder (445). A second shaft (447) is fixedly mounted on the second sealing block (446), and the second shaft (447) is fixedly connected to the guide block (53). Both ends of the first transmission cylinder (441) and the second transmission cylinder (445) are connected by pipes (448). The pipes on the two first transmission cylinders (441) are connected in opposite directions. Both the first transmission cylinder (441) and the second transmission cylinder (445) are filled with a transmission medium.

8. The wire feeding mechanism with stable wire feeding control according to claim 7, characterized in that, A support base (11) is fixedly installed on the frame (1), and a support column (12) for supporting the bobbin (2) is rotatably installed on the support base (11).

9. A wire feeding mechanism with stable wire feeding control according to claim 8, characterized in that, A third gear (32) is fixedly installed on the drive wheel (31), and the two third gears (32) located on the same set of conveying components (3) mesh with each other.

10. A lace embroidery machine, characterized in that, Including the wire feeding mechanism with stable wire feeding control as described in any one of claims 1-9.

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