Sewing machine pay-off rack convenient to use

Abstract

The invention belongs to the technical field of sewing machine pay-off racks, and particularly relates to a sewing machine pay-off rack convenient to use. The paying-off connector assembly comprises a fixing ring. A movable ring is rotationally connected into the fixed ring; the side face of the movable ring is fixedly connected with a rotating cylinder through a set of connecting rods. The inner side of the rotary drum is fixedly connected with an elastic sleeve; the outer side of the rotary drum is fixedly connected with a gear ring; the surface of the mounting seat is fixedly connected with a motor; and an output shaft of the motor is connected with a gear. New and old thread ends are rotationally twisted by utilizing the rotating drum and the elastic sleeve to form a twisting section between the thread ends so as to complete connection and fixation between the new and old thread ends, so that the automation degree of the pay-off rack of the sewing machine is improved, the actual use is more convenient, the pay-off rack does not depend on the technical level of operators, and the operation complexity is reduced; and the efficiency and the stability degree of wire end connection are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sewing machine thread pay-off frames, in particular to a sewing machine thread pay-off frame that is easy to use. Background Art

[0002] In the use of modern sewing machines, the pay-off stand is one of the indispensable and important parts. Its main function is to ensure that the sewing machine can stably supply the thread when working. The pay-off stand is usually located above the sewing machine. It completes the sewing task by supporting the thread spool and guiding the sewing thread on the spool to the needle eye of the sewing machine. With the development of sewing technology, the design and structure of the pay-off stand are also constantly improving to adapt to different types of sewing work and improve the efficiency and stability of sewing.

[0003] A Chinese patent application CN104088095B discloses a sewing machine thread stand, the technical solution of which is as follows: it includes an integrally formed frame, a thread passing column and an elastic bracket, the frame is composed of thread ball trays symmetrically distributed on both sides, and is high in the middle and low at both ends, a base is provided at the bottom of the thread ball tray, a vertical thread passing column is provided in the center of the thread ball tray, and an elastic bracket is sleeved on the frame shaft. This technology eliminates the large bracket in the shape of the letter F in the reverse direction, and adopts a small and practical frame, which greatly reduces the appearance size, and the sewing thread passes through the inside of the frame, which is beautiful and practical. Since the base is provided with grooves and screw holes for placing magnets, the frame can be fixed to any ideal position on the equipment.

[0004] However, the above-mentioned and prior arts often have the following defects: when the sewing machine's thread pay-off stand is in use, if a single sewing work is not completed and the thread on the surface of the thread drum is used up, it is necessary to replace the new thread drum and connect the thread end of the new thread drum with the previous thread end. Since the sewing machine rotates at a high speed when working, the thread ends cannot generally be connected by knotting, otherwise it is easy to cause problems such as thread jamming and needle breakage, and even damage the tension system of the sewing machine. Therefore, manual twisting or slight melting with a lighter is usually adopted when connecting the thread ends. It is not only cumbersome to operate, but also has high technical requirements for relevant personnel, and has uncertainty and instability.

[0005] To this end, the present invention provides a sewing machine thread pay-off stand that is easy to use. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: the sewing machine thread pay-off stand convenient to use of the present invention comprises a base, a frame and a mounting seat; the frame is fixedly connected between the base and the mounting seat; a group of thread spools are placed on the surface of the base;

[0008] It also includes a wire-releasing joint assembly; the wire-releasing joint assembly is arranged on the upper side of the mounting seat; the wire-releasing joint assembly is used for allowing the wire to pass through and connecting the wire ends;

[0009] The line-releasing joint assembly includes a fixed ring fixedly connected to the surface of the mounting seat; a movable ring is rotatably connected inside the fixed ring; a rotating drum is fixedly connected to the side of the movable ring via a group of connecting rods; an elastic sleeve is fixedly connected to the inside of the rotating drum; a gear ring is fixedly connected to the outside of the rotating drum; a motor is fixedly connected to the surface of the mounting seat; a gear is connected to the output shaft of the motor, and the gear is meshed with the gear ring.

[0010] Preferably, the elastic sleeve is designed as a hollow structure; the movable ring and the fixed ring are connected in a rotating seal; a connecting pipe is provided inside the connecting rod; one end of the connecting pipe is connected to the fixed ring, and the other end is connected to the elastic sleeve;

[0011] An air delivery component is arranged between the mounting seat and the frame; the air delivery component is used to deliver compressed air to the interior of the fixing ring and control the inflation and deformation of the elastic sleeve.

[0012] Preferably, the gas delivery assembly includes an air cylinder fixedly connected to the lower side of the mounting seat; a pressure plate is slidingly and sealably connected inside the air cylinder; a spring is fixedly connected between the pressure plate and the air cylinder; an electric push rod is provided between the lower side of the pressure plate and the frame; and the top of the air cylinder is connected to the fixed ring through an air pipe.

[0013] Preferably, narrow grooves are formed on one side of the rotating drum, the elastic sleeve and the gear ring.

[0014] Preferably, the narrow groove side wall surface of the rotating drum is respectively fixedly connected with a spring piece 1 and a spring piece 2; the spring piece 1 and the spring piece 2 are staggered and both are inclined toward the center of the rotating drum.

[0015] Preferably, a pair of rollers are provided on the lower side of the rotating drum; the rollers are rotatably connected to the surface of the mounting seat through brackets; and the rollers and the rotating drum are in contact with each other.

[0016] Preferably, a group of coating boxes are evenly distributed on the inner side of the rotating drum; a slider is connected to the inside of the coating box in a sliding and sealing manner; a spring 2 is fixedly connected between the slider and the coating box; a coating head is fixedly connected to the side of the slider away from the rotating drum; guide holes are provided inside the slider and the coating head; the rotating drum is designed to be a hollow structure, and an auxiliary agent is stored inside the rotating drum; the coating box is connected to the rotating drum through a suction pipe; a one-way valve is provided inside the suction pipe and the guide hole; the roller and the slider are made of magnetic material, and the roller and the slider attract each other when they are close.

[0017] Preferably, a pair of the elastic sleeves are provided, and the pair of elastic sleeves are connected to each other through a conduit; and the coating box is provided between the pair of elastic sleeves.

[0018] Preferably, a storage component is fixedly connected between the pair of elastic sleeves at corresponding positions of the coating box; a transmission component is fixedly connected between the storage component and the coating head; and the storage component and the transmission component are both made of elastic water-absorbing material.

[0019] Preferably, the storage member is designed to be curved and protrudes toward the center of the drum; a wavy elastic retaining frame is fixedly connected to the inside of the storage member.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The easy-to-use pay-off stand for a sewing machine described in the present invention utilizes a rotating drum and an elastic sleeve to rotate and twist the new and old thread ends to form a twisting section between the thread ends to complete the connection and fixation between the new and old thread ends, thereby improving the degree of automation of the pay-off stand for a sewing machine and being more convenient for practical use. It does not rely on the technical level of the operator, reduces the complexity of operation, improves the efficiency and stability of the thread connection, and avoids the connection method of melting with a lighter to prevent the thread from being burned or even causing other safety problems.

[0022] 2. The present invention discloses a sewing machine thread pay-off stand which is easy to use. After placing the No. 1 thread end and the No. 2 thread end inside the elastic sleeve, the air supply assembly is used to supply air to the inside of the fixed ring. The compressed air enters the elastic sleeve through the fixed ring and the connecting pipe, causing the elastic sleeve to inflate and deform. Then, the elastic sleeve shrinks toward the middle, and its inner diameter gradually decreases to clamp the No. 1 thread end and the No. 2 thread end. Then, the motor is used to drive the rotating drum and the elastic sleeve to rotate, which can increase the contact degree between the elastic sleeve and the thread end, improve the kneading effect of the elastic sleeve on the thread end, and make the No. 1 thread end and the No. 2 thread end be more tightly wound. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 is a stereogram of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the wire-releasing joint assembly and the gas transmission assembly in the present invention;

[0026] Figure 3 It is a disassembly schematic diagram of the wire-releasing connector assembly in the present invention;

[0027] Figure 4 It is a structural schematic diagram of the rotary drum in the present invention;

[0028] Figure 5 yes Figure 4 A partial enlarged view of the middle part;

[0029] Figure 6 is a top cross-sectional view of the pay-off connector assembly of the present invention;

[0030] Figure 7 yes Figure 6 A partial enlarged view of point B in the middle.

[0031] In the figure: base 1, frame 2, mounting seat 3, bobbin 4, fixed ring 5, movable ring 6, connecting rod 7, rotating drum 8, elastic sleeve 9, gear ring 10, motor 11, gear 12, connecting pipe 13, air storage cylinder 14, pressure plate 15, spring 1 16, electric push rod 17, air pipe 18, narrow slot 19, spring 1 20, spring 2 21, roller 22, coating box 23, slider 24, spring 2 25, coating head 26, guide hole 27, suction tube 28, conduit 29, storage part 30, transmission part 31, elastic retainer 32, thread head No. 1 33, thread head No. 2 34. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figures 1 to 7 As shown, the sewing machine thread pay-off stand convenient for use of the present invention comprises a base 1, a frame 2 and a mounting seat 3; the frame 2 is fixedly connected between the base 1 and the mounting seat 3; a group of thread spools 4 are placed on the surface of the base 1;

[0034] It also includes a wire-releasing joint assembly; the wire-releasing joint assembly is arranged on the upper side of the mounting seat 3; the wire-releasing joint assembly is used for allowing the wire to pass through and connecting the wire ends;

[0035] The line-releasing joint assembly includes a fixed ring 5 fixedly connected to the surface of the mounting seat 3; a movable ring 6 is rotatably connected inside the fixed ring 5; a rotating drum 8 is fixedly connected to the side of the movable ring 6 through a group of connecting rods 7; an elastic sleeve 9 is fixedly connected to the inner side of the rotating drum 8; a gear ring 10 is fixedly connected to the outer side of the rotating drum 8; a motor 11 is fixedly connected to the surface of the mounting seat 3; the output shaft of the motor 11 is connected to a gear 12, and the gear 12 is meshed with the gear ring 10.

[0036] In the prior art, when the sewing machine thread pay-off stand is in use, if a single sewing work is not completed and the thread on the surface of the thread drum 4 is used up, it is necessary to replace the new thread drum 4 and connect the thread end of the new thread drum 4 with the previous thread end. Since the sewing machine rotates at a high speed when working, it is generally not possible to connect the thread ends by knotting, otherwise it is easy to cause problems such as thread jamming and needle breakage, and even damage the tension system of the sewing machine. Therefore, manual twisting or slight melting with a lighter is usually adopted when connecting the thread ends. It is not only cumbersome to operate, but also has high technical requirements for related personnel, and has uncertainty and instability.

[0037] When the present invention is in use, the thread normally passes through the rotating drum 8 of the thread-releasing joint assembly and the elastic sleeve 9 to be used for the sewing machine to draw the thread. When the thread on the surface of a thread drum 4 is about to run out, the rotation speed of the sewing machine is controlled to be reduced, so that the thread moves slowly until the thread head moves to the inside of the rotating drum 8 and the elastic sleeve 9 (for the convenience of explanation, this thread head is defined as the first thread head 33), and then the thread head of the new thread drum 4 passes through the guide wheel of the frame 2, the fixing ring 5 and the rotating drum 8 in sequence, so that the thread head of the new thread drum 4 also enters the elastic sleeve 9 (for the convenience of explanation, the thread head is defined as the first thread head 33). In the embodiment of the present invention, the thread end is defined as thread end No. 2 34, and then thread end No. 1 33 and thread end No. 2 34 form an overlapping section inside the elastic sleeve 9, and then the motor 11, gear 12, and gear ring 10 drive the rotating drum 8 and the elastic sleeve 9 to rotate, and the elastic sleeve 9 is used to twist the overlapping section of thread end No. 1 33 and thread end No. 2 34, so that thread end No. 1 33 and thread end No. 2 34 are entangled and crossed with each other to achieve thread end docking, and then the sewing machine can be controlled to work normally, and the thread of the new thread reel 4 can be supplied through the rotating drum 8 and the internal movement of the elastic sleeve 9.

[0038] The present invention utilizes a rotating drum 8 and an elastic sleeve 9 to rotate and twist the new and old thread ends to form a twisting section between the thread ends, so as to complete the connection and fixation between the new and old thread ends, improve the degree of automation of the sewing machine thread pay-off stand, and be more convenient for practical use. It does not rely on the technical level of the operator, reduces the complexity of operation, improves the efficiency and stability of the thread end connection, and avoids the connection method of melting by a lighter, thereby preventing the thread from being burned or even causing other safety problems.

[0039] As another embodiment of the present invention, the elastic sleeve 9 is designed as a hollow structure; the movable ring 6 and the fixed ring 5 are connected in a rotating seal; a connecting pipe 13 is provided inside the connecting rod 7; one end of the connecting pipe 13 is connected to the fixed ring 5, and the other end is connected to the elastic sleeve 9;

[0040] An air delivery component is provided between the mounting seat 3 and the frame 2 ; the air delivery component is used to deliver compressed air to the interior of the fixing ring 5 and control the inflation and deformation of the elastic sleeve 9 .

[0041] After placing the No. 1 thread end 33 and the No. 2 thread end 34 inside the elastic sleeve 9, first use the air supply assembly to supply air to the interior of the fixing ring 5. The compressed air enters the elastic sleeve 9 through the fixing ring 5 and the connecting pipe 13, causing the elastic sleeve 9 to inflate and deform. Then, the elastic sleeve 9 shrinks toward the middle, and its inner diameter gradually decreases to clamp the No. 1 thread end 33 and the No. 2 thread end 34. Then, the motor 11 is used to drive the rotating drum 8 and the elastic sleeve 9 to rotate, which can increase the contact degree between the elastic sleeve 9 and the thread ends, and improve the rubbing effect of the elastic sleeve 9 on the thread ends, so that the No. 1 thread end 33 and the No. 2 thread end 34 are more tightly wound.

[0042] The gas delivery assembly includes an air cylinder 14 fixedly connected to the lower side of the mounting base 3; a pressure plate 15 is slidingly and sealably connected inside the air cylinder 14; a spring 16 is fixedly connected between the pressure plate 15 and the air cylinder 14; an electric push rod 17 is provided between the lower side of the pressure plate 15 and the frame 2; the top of the air cylinder 14 is connected to the fixed ring 5 via an air pipe 18.

[0043] The specific working principle of the air supply assembly is as follows: by controlling the electric push rod 17 to extend upward, the pressure plate 15 is driven to move upward inside the air storage cylinder 14, and then the pressure plate 15 squeezes the air inside the air storage cylinder 14, and squeezes the compressed air into the elastic sleeve 9 through the air pipe 18, the fixing ring 5, and the connecting pipe 13 to control the elastic sleeve 9 to shrink and deform. After the twisting is completed, the pressure plate 15 is controlled to reset downward by the electric push rod 17, and the air in the elastic sleeve 9 returns to the air storage cylinder 14, and the elastic sleeve 9 gradually recovers and the inner diameter expands, reducing the contact between the elastic sleeve 9 and the thread end, so that when the sewing machine is working later, the thread can be normally drawn through the elastic sleeve 9, thereby reducing the thread supply resistance.

[0044] As another embodiment of the present invention, a narrow slot 19 is provided on one side of the rotating drum 8, the elastic sleeve 9 and the gear ring 10. When docking, after the thread end of the new thread drum 4 passes through the guide wheel of the frame 2, for the convenience of operation, the second thread end 34 is first passed through the inside of the fixing ring 5, and then the second thread end 34 is pushed into the elastic sleeve 9 from the narrow slot 19, and then slightly pulled back a short distance, the second thread end 34 can be smoothly placed in the elastic sleeve 9, further reducing the difficulty of passing the second thread end 34 through the elastic sleeve 9.

[0045] It is worth noting that after the twisting is completed, the rotating drum 8 is controlled to rotate so that the narrow slot 19 moves to the top position to prevent the thread from passing through the narrow slot 19 and escaping from the rotating drum 8 downward during the normal thread supply process.

[0046] The side wall surfaces of the narrow slot 19 of the rotating drum 8 are respectively fixedly connected with the spring piece 1 20 and the spring piece 2 21; the spring piece 1 and the spring piece 21 are staggered and tilted toward the center of the rotating drum 8. When the second thread end 34 is pushed into the elastic sleeve 9 through the narrow slot 19, the thread end will push the spring piece 1 20 and the spring piece 2 21 to deflect downward in turn, and then in the process of twisting and feeding the thread, the spring piece 1 20 and the spring piece 2 21 cannot deflect upward, so that the thread end can be locked inside the rotating drum 8, further preventing the thread from slipping out.

[0047] As another embodiment of the present invention, a pair of rollers 22 are provided at the lower side of the rotating drum 8; the rollers 22 are rotatably connected to the surface of the mounting seat 3 through a bracket; the rollers 22 and the rotating drum 8 are in contact with each other. By providing the rollers 22, when the rotating drum 8 rotates, the rollers 22 can rotate together at the bottom thereof, thereby supporting the rotating drum 8 and improving the stability of the rotating drum 8 during movement.

[0048] As another embodiment of the present invention, a group of coating boxes 23 are evenly distributed on the inner side of the rotating drum 8 (the number of coating boxes 23 is preferably two); a slider 24 is slidably and sealedly connected inside the coating box 23; a spring 25 is fixedly connected between the slider 24 and the coating box 23; a coating head 26 is fixedly connected to the side of the slider 24 away from the rotating drum 8; guide holes 27 are provided inside the slider 24 and the coating head 26; the rotating drum 8 is designed to be a hollow structure, and an auxiliary agent is stored inside the rotating drum 8; the coating box 23 is connected to the rotating drum 8 through a suction pipe 28; a one-way valve is provided inside the suction pipe 28 and the guide hole 27; the roller 22 and the slider 24 are made of magnetic material, and the roller 22 and the slider 24 attract each other when they are close.

[0049] The elastic sleeve 9 is provided in pair, and the pair of elastic sleeves 9 are connected to each other through a conduit 29 ; the coating box 23 is provided between the pair of elastic sleeves 9 .

[0050] During the rotation and twisting process of the drum 8, when the coating box 23 rotates to the bottom position close to the roller 22, the roller 22 generates a magnetic attraction on the slider 24, driving the slider 24 to move toward the drum 8, and then the slider 24 squeezes the auxiliary agent inside the coating box 23, and squeezes the auxiliary agent to the thread end through the guide hole 27. When the coating box 23 rotates to the top, the force of the roller 22 on the slider 24 is weak. At this time, the spring 25 drives the slider 24 to move toward the center of the drum 8, and then negative pressure is generated inside the coating box 23, and the auxiliary agent in the drum 8 is replenished into the coating box 23 through the suction tube 28, so that during the twisting process, the auxiliary agent is continuously and intermittently squeezed into the overlapping section of the No. 1 thread end 33 and the No. 2 thread end 34, so that the thread ends are entangled while the gaps between the thread ends are filled and bonded with the auxiliary agent, thereby improving the docking strength and efficiency of the thread ends.

[0051] The above-mentioned auxiliary agents should preferably be those with low viscosity, slow curing and high flexibility, such as rosin glue, transparent nail polish, textile auxiliary agents, etc., to prevent the thread from being adhered to the inside of the elastic sleeve 9 and to retain the elasticity and flexibility of the thread. It is worth noting that after the twisting of the thread end is completed and the elastic sleeve 9 is restored, the sewing machine should be immediately controlled to start and the thread end bonding section should be pulled out of the elastic sleeve 9 to prevent the auxiliary agent from adhering to the elastic sleeve 9 after curing.

[0052] As another embodiment of the present invention, a pair of elastic sleeves 9 are fixedly connected with a storage member 30 at the corresponding position of the coating box 23; a transmission member 31 is fixedly connected between the storage member 30 and the coating head 26; the storage member 30 and the transmission member 31 are both made of elastic water-absorbing materials, such as sponges, porous foams, etc. After the elastic sleeve 9 is inflated, it can drive the storage member 30 to move and deform toward the thread end when it contracts toward the middle, so that the storage member 30 fits with the thread end, and after the coating head 26 extrude the auxiliary agent, under the capillary action of the transmission member 31 and the storage member 30, the auxiliary agent can enter the storage member 30 along the transmission member 31. The auxiliary agent is applied to the thread end by the storage member 30, which can improve the uniformity of the application of the thread end, avoid the problem that the pressure of the auxiliary agent extruded by the coating head 26 is too low, and the auxiliary agent is difficult to contact with the thread end. In addition, when the elastic sleeve 9 is restored, the storage member 30 can be separated from the thread end together with the elastic sleeve 9, avoiding the problem that the storage member 30 always contacts with the thread and applies the auxiliary agent in the subsequent thread supply process.

[0053] The storage member 30 is designed to be curved and protrudes toward the center of the rotating drum 8; a wavy elastic retainer 32 is fixedly connected inside the storage member 30. By designing the storage member 30 to be curved, the contact effect between it and the thread end can be further improved, so as to facilitate the application of the auxiliary agent. The elastic retainer 32 serves as the internal skeleton support of the storage member 30, which can improve the elastic deformation and recovery capabilities of the storage member 30.

[0054] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sewing machine thread pay-off stand that is easy to use, comprising a base (1), a frame (2) and a mounting seat (3); the frame (2) is fixedly connected between the base (1) and the mounting seat (3); a group of thread spools (4) are placed on the surface of the base (1); Features: It also includes a wire-releasing joint assembly; the wire-releasing joint assembly is arranged on the upper side of the mounting seat (3); the wire-releasing joint assembly is used for allowing the wire to pass through and connecting the wire ends; The line-releasing joint assembly comprises a fixed ring (5) fixedly connected to the surface of a mounting seat (3); a movable ring (6) is rotatably connected inside the fixed ring (5); a rotating drum (8) is fixedly connected to the side of the movable ring (6) via a group of connecting rods (7); an elastic sleeve (9) is fixedly connected to the inside of the rotating drum (8); a gear ring (10) is fixedly connected to the outside of the rotating drum (8); a motor (11) is fixedly connected to the surface of the mounting seat (3); the output shaft of the motor (11) is connected to a gear (12), and the gear (12) is meshed with the gear ring (10).

2. A convenient-to-use pay-off stand for sewing machines according to claim 1, characterized in that: The elastic sleeve (9) is designed to be a hollow structure; the movable ring (6) and the fixed ring (5) are connected in a rotating sealed manner; a connecting pipe (13) is provided inside the connecting rod (7); one end of the connecting pipe (13) is connected to the fixed ring (5), and the other end is connected to the elastic sleeve (9); An air delivery component is provided between the mounting seat (3) and the frame (2); the air delivery component is used to deliver compressed air to the interior of the fixing ring (5) and to control the inflation and deformation of the elastic sleeve (9).

3. The easy-to-use pay-off stand for sewing machines according to claim 2, characterized in that: The gas delivery assembly comprises an air storage cylinder (14) fixedly connected to the lower side of the mounting seat (3); a pressure plate (15) is slidably and sealably connected inside the air storage cylinder (14); a spring (16) is fixedly connected between the pressure plate (15) and the air storage cylinder (14); an electric push rod (17) is provided between the lower side of the pressure plate (15) and the frame (2); and the top of the air storage cylinder (14) is connected to the fixing ring (5) via an air pipe (18).

4. The easy-to-use pay-off stand for sewing machines according to claim 1, characterized in that: A narrow groove (19) is formed on one side of the rotating drum (8), the elastic sleeve (9) and the gear ring (10).

5. The easy-to-use pay-off stand for sewing machines according to claim 4, characterized in that: The side wall surfaces of the narrow slot (19) of the rotating drum (8) are respectively fixedly connected with a spring piece 1 (20) and a spring piece 2 (21); the spring piece 1 and the spring piece 2 (21) are staggered and both are inclined toward the center of the rotating drum (8).

6. The easy-to-use pay-off stand for sewing machines according to claim 1, characterized in that: A pair of rollers (22) are arranged on the lower side of the rotating drum (8); the rollers (22) are rotatably connected to the surface of the mounting seat (3) via brackets; and the rollers (22) and the rotating drum (8) are in close contact with each other.

7. The easy-to-use pay-off stand for sewing machines according to claim 6, characterized in that: A group of coating boxes (23) are evenly distributed inside the rotating drum (8); a slider (24) is slidably and sealably connected inside the coating box (23); a second spring (25) is fixedly connected between the slider (24) and the coating box (23); a coating head (26) is fixedly connected to the side of the slider (24) away from the rotating drum (8); guide holes (27) are provided inside the slider (24) and the coating head (26); The rotating drum (8) is designed to be a hollow structure, and an auxiliary agent is stored inside the rotating drum (8); the coating box (23) is connected to the rotating drum (8) through a suction pipe (28); a one-way valve is provided inside the suction pipe (28) and the guide hole (27); the roller (22) and the slider (24) are both made of magnetic materials, and the roller (22) and the slider (24) attract each other when they are close to each other.

8. The easy-to-use pay-off stand for sewing machines according to claim 7, characterized in that: A pair of the elastic sleeves (9) are provided, and the pair of elastic sleeves (9) are connected to each other via a conduit (29); the coating box (23) is provided between the pair of elastic sleeves (9).

9. The easy-to-use pay-off stand for sewing machines according to claim 8, characterized in that: A storage component (30) is fixedly connected between the pair of elastic sleeves (9) at corresponding positions of the coating box (23); a transmission component (31) is fixedly connected between the storage component (30) and the coating head (26); and the storage component (30) and the transmission component (31) are both made of elastic water-absorbing material.

10. The easy-to-use pay-off stand for sewing machines according to claim 9, characterized in that: The storage member (30) is designed to be curved, and the storage member (30) protrudes toward the center of the rotating drum (8); a wavy elastic retaining frame (32) is fixedly connected inside the storage member (30).

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