A sewing machine thread stand which is easy to use

Abstract

The application belongs to the technical field of sewing machine thread rack, in particular to a sewing machine thread rack convenient to use, which comprises a thread joint assembly; the thread joint assembly comprises a fixed ring; the fixed ring is internally rotationally connected with a movable ring; the movable ring is fixedly connected with a rotating drum through a group of connecting rods on the lateral surface; the rotating drum is fixedly connected with an elastic sleeve on the inner side; the rotating drum is fixedly connected with a gear ring on the outer side; a motor is fixedly connected on the surface of the mounting seat; and the output shaft of the motor is connected with a gear. The new and old thread ends are twisted by the rotating drum and the elastic sleeve, the twisted section between the thread ends is formed, the connection and fixation between the new and old thread ends are completed, the automation degree of the sewing machine thread rack is improved, and the actual use is more convenient. The application does not depend on the technical level of the operator, reduces the operation complexity, improves the efficiency and stability of the thread end connection.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sewing machine thread stand, in particular to a sewing machine thread stand convenient to use. BACKGROUND

[0002] In the use of modern sewing machines, the thread stand is an indispensable important component, which mainly ensures the stable supply of thread during the operation of the sewing machine. The thread stand is usually located above the sewing machine, supports the thread cylinder, and guides the sewing thread on the thread cylinder to the needle eye of the sewing machine to complete the sewing task. With the development of sewing technology, the design and structure of the thread stand are constantly improving to adapt to different types of sewing work and improve the efficiency and stability of sewing.

[0003] A patent of Chinese patent application CN104088095B discloses a sewing machine thread stand, the technical solution of which is: including an integrally formed frame body, a thread passing column and an elastic support, the frame body is composed of two symmetrically distributed thread ball trays, and has a shape of high in the middle and low at both ends, a base is arranged at the bottom of the thread ball tray, a thread passing column vertically upward is arranged at the center of the thread ball tray, and an elastic support is arranged on the frame shaft. This technology cancels the large support with a reverse F-shaped appearance, uses a small and practical frame body, greatly reduces the size of the appearance, and the sewing thread passes through the inside of the frame body, which is beautiful and practical. The base is provided with a groove for placing a magnet and a screw hole, so that the frame body can be fixed at any desired position on the equipment.

[0004] However, the above-mentioned and existing technologies often have the following defects: when the thread stand of the sewing machine is used, if the single sewing work is not completed and the thread on the surface of the thread cylinder is used up, a new thread cylinder needs to be replaced, and the thread end of the new thread cylinder needs to be connected with the thread end of the previous one. Since the sewing machine operates at a high speed, a knotting method cannot be used to connect the thread ends, otherwise, problems such as thread jamming and needle breaking may occur, and even the tension system of the sewing machine may be damaged. Therefore, the thread ends are usually connected by manual twisting or a lighter, which is not only complicated to operate, but also requires high technical requirements for the relevant personnel, and has uncertainty and instability.

[0005] Therefore, the application provides a sewing machine thread stand convenient to use. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical solution adopted by the application to solve the technical problem is: the sewing machine thread stand convenient to use comprises a base, a rack and a mounting seat, the rack is fixedly connected between the base and the mounting seat, and a group of thread cylinders is placed on the surface of the base.

[0008] The wire unwinding joint assembly is arranged on the upper side of the mounting base and used for passing the wire and connecting the wire head;

[0009] The wire unwinding joint assembly comprises a fixed ring fixedly connected to the surface of the mounting base, an active ring rotatably connected inside the fixed ring, a rotating drum fixedly connected to the side surface of the active ring through a set of connecting rods, an elastic sleeve fixedly connected to the inner side of the rotating drum, a gear ring fixedly connected to the outer side of the rotating drum, a motor fixedly connected to the surface of the mounting base, and a gear connected to the output shaft of the motor and engaged with the gear ring.

[0010] Preferably, the elastic sleeve is designed as a hollow structure, the active ring and the fixed ring are rotatably and sealingly connected, and the connecting rods are each provided with a connecting pipe in communication with the fixed ring at one end and the elastic sleeve at the other end.

[0011] A gas conveying assembly is arranged between the mounting base and the rack and used for conveying compressed air into the fixed ring and controlling the inflation deformation of the elastic sleeve.

[0012] Preferably, the gas conveying assembly comprises a gas storage cylinder fixedly connected to the lower side of the mounting base, a pressing plate slidingly and sealingly connected inside the gas storage cylinder, a spring one fixedly connected between the pressing plate and the gas storage cylinder, an electric push rod arranged between the lower side of the pressing plate and the rack, and a gas pipe in communication between the top of the gas storage cylinder and the fixed ring.

[0013] Preferably, the rotating drum, the elastic sleeve and the gear ring are each provided with a slot on one side.

[0014] Preferably, the slot side wall surface of the rotating drum is respectively fixedly connected with an elastic piece one and an elastic piece two, and the elastic piece one and the elastic piece two are arranged in a staggered manner and each inclined toward the center of the rotating drum.

[0015] Preferably, a pair of supporting rollers are arranged on the lower side of the rotating drum and rotatably connected to the surface of the mounting base through a support, and the supporting rollers and the rotating drum are mutually attached.

[0016] Preferably, a set of coating boxes are uniformly arranged on the inner side of the rotating drum, a sliding block is slidingly and sealingly connected inside the coating box, a spring two is fixedly connected between the sliding block and the coating box, a coating head is fixedly connected to the side of the sliding block away from the rotating drum, a guide hole is formed in the sliding block and the coating head, the rotating drum is designed as a hollow structure and stores an auxiliary agent inside, the coating box and the rotating drum are in communication through a suction pipe, a one-way valve is arranged inside the suction pipe and the guide hole, and the supporting rollers and the sliding blocks are each made of a magnetic material and attract each other when close to each other.

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

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

[0019] Preferably, the storage member is designed as a curved shape, and the storage member is protruded towards the center of the rotating drum; the storage member is fixedly connected with the wave-shaped elastic holder inside.

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

[0021] 1. The sewing machine thread spooling frame is convenient to use, the old and new thread ends are twisted by the rotating drum and the elastic sleeve, the twisting section between the thread ends is formed, the connection and fixation between the old and new thread ends are completed, the automation degree of the sewing machine thread spooling frame is improved, the actual use is more convenient, the technical level of the operator is not relied on, the operation complexity is reduced, the efficiency and stability of the thread end connection are improved, and the connection mode of the lighter is avoided, the thread is prevented from being burned out, and other safety problems are avoided.

[0022] 2. The sewing machine thread spooling frame is convenient to use, the old and new thread ends are twisted by the rotating drum and the elastic sleeve, the twisting section between the thread ends is formed, the connection and fixation between the old and new thread ends are completed, the automation degree of the sewing machine thread spooling frame is improved, the actual use is more convenient, the technical level of the operator is not relied on, the operation complexity is reduced, the efficiency and stability of the thread end connection are improved, and the connection mode of the lighter is avoided, the thread is prevented from being burned out, and other safety problems are avoided. BRIEF DESCRIPTION OF DRAWINGS

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

[0024] Figure 1 is a perspective view of the present application;

[0025] Figure 2 is a structure schematic view of the thread spooling joint assembly and the air supply assembly in the present application;

[0026] Figure 3 is a disassembly schematic view of the thread spooling joint assembly in the present application;

[0027] Figure 4 is a structure schematic view of the rotating drum in the present application;

[0028] Figure 5 isFigure 4 Local enlarged view at A in FIG. 1;

[0029] Figure 6 is a top view of the wire reel joint assembly in the application;

[0030] Figure 7 is Figure 6 Local enlarged view at B in FIG. 1.

[0031] In the figure: base 1, frame 2, mounting seat 3, wire reel 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 cylinder 14, pressing plate 15, spring 16, electric push rod 17, air pipe 18, slot 19, elastic piece 20, elastic piece 21, idler 22, coating box 23, sliding block 24, spring 25, coating head 26, guide hole 27, suction pipe 28, guide pipe 29, storage piece 30, transmission piece 31, elastic retainer 32, No. 1 wire head 33, No. 2 wire head 34. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, purposes and effects realized by the application easy to understand, the application is further described below in combination with specific embodiments.

[0033] As Figures 1 to 7 shown, the sewing machine wire reel of the application is convenient to use, which 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 wire reels 4 is placed on the surface of the base 1;

[0034] It also comprises a wire reel joint assembly; the wire reel joint assembly is arranged on the upper side of the mounting seat 3; the wire reel joint assembly is used for wire passing and connecting wire heads;

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

[0036] In the prior art, if the single sewing work is not completed and the thread on the surface of the thread cylinder 4 is used up, a new thread cylinder 4 needs to be replaced, and the thread end of the new thread cylinder 4 needs to be connected with the previous thread end. Because the sewing machine works at a high speed, the thread end cannot be connected by knotting, otherwise, problems such as thread jamming and needle breaking are easily caused, and even the tension system of the sewing machine is damaged. Therefore, the thread end is usually connected by manual twisting or slight melting by a lighter, which is not only complicated to operate, but also has high technical requirements for the relevant personnel, and is uncertain and unstable.

[0037] In use, the thread normally passes through the rotating drum 8 and the elastic sleeve 9 inside the thread joint assembly for the sewing machine to draw the thread. When the thread on the surface of a thread cylinder 4 is about to be used up, the speed of the sewing machine is controlled to be reduced, so that the thread moves slowly until the thread end moves to the inside of the rotating drum 8 and the elastic sleeve 9 (for the sake of convenience, the thread end is defined as a first thread end 33). Then the thread end of the new thread cylinder 4 is sequentially threaded through the guide roller, the fixed ring 5 and the rotating drum 8 of the rack 2, so that the thread end of the new thread cylinder 4 also enters the inside of the elastic sleeve 9 (for the sake of convenience, the thread end is defined as a second thread end 34). Then the first thread end 33 and the second thread end 34 form an overlapping section inside the elastic sleeve 9. Then the rotating drum 8 and the elastic sleeve 9 are driven to rotate by the motor 11, the gear 12 and the gear ring 10, and the overlapping section of the first thread end 33 and the second thread end 34 is twisted by the elastic sleeve 9, so that the first thread end 33 and the second thread end 34 are intertwined and crossed with each other, the thread ends are connected, and then the sewing machine can work normally. The thread of the new thread cylinder 4 can move through the inside of the rotating drum 8 and the elastic sleeve 9 for threading.

[0038] The rotating drum 8 and the elastic sleeve 9 are used to rotate and twist the new and old thread ends to form a twisted section between the thread ends, so as to connect and fix the new and old thread ends, improve the automation degree of the thread feeding rack of the sewing machine, and facilitate actual use. The operation complexity is reduced, the efficiency and stability of the thread end connection are improved, and the connection method of melting by a lighter is avoided to prevent the thread from being burned or other safety problems.

[0039] As another embodiment of the present application, the elastic sleeve 9 is designed as a hollow structure; the movable ring 6 and the fixed ring 5 are rotatably and sealingly connected; the connecting pipes 13 are arranged in the connecting rods 7; one end of the connecting pipe 13 communicates with the fixed ring 5, and the other end communicates with the elastic sleeve 9;

[0040] The gas conveying assembly is arranged between the mounting seat 3 and the rack 2; the gas conveying assembly is used to convey compressed air into the fixed ring 5 and control the elastic sleeve 9 to deform by inflation.

[0041] After the first and second thread ends 33 and 34 are placed inside the elastic sleeve 9, the air supply assembly is used to supply air into the fixed ring 5, the compressed air passes through the fixed ring 5, the connecting pipe 13 and enters the elastic sleeve 9, so that the elastic sleeve 9 is deformed by inflation, and then the elastic sleeve 9 is contracted to the middle part, the inner diameter of the elastic sleeve 9 is gradually reduced, and the first and second thread ends 33 and 34 are clamped, then the motor 11 drives the rotating drum 8 and the elastic sleeve 9 to rotate, so that the contact degree between the elastic sleeve 9 and the thread end is increased, the rubbing effect of the elastic sleeve 9 on the thread end is improved, and the first and second thread ends 33 and 34 are wound more tightly.

[0042] The air supply assembly comprises a gas storage cylinder 14 fixedly connected to the lower side of the mounting seat 3; the gas storage cylinder 14 is slidably and sealingly connected with a pressing plate 15; the pressing plate 15 is fixedly connected with a spring 16 between the pressing plate 15 and the gas storage cylinder 14; an electric push rod 17 is arranged between the lower side of the pressing plate 15 and the rack 2; and the top of the gas storage cylinder 14 is communicated with the fixed ring 5 through an air pipe 18.

[0043] The specific working principle of the air supply assembly is as follows: the electric push rod 17 is controlled to stretch upwards, the pressing plate 15 is driven to move upwards in the gas storage cylinder 14, then the pressing plate 15 extrudes the air in the gas storage cylinder 14, and the compressed air is extruded into the elastic sleeve 9 through the air pipe 18, the fixed ring 5 and the connecting pipe 13, so as to control the elastic sleeve 9 to shrink and deform, after the twisting is finished, the pressing plate 15 is controlled to reset downwards by the electric push rod 17, then the air in the elastic sleeve 9 returns to the gas storage cylinder 14, the elastic sleeve 9 gradually recovers and the inner diameter of the elastic sleeve 9 expands, so that the contact degree between the elastic sleeve 9 and the thread end is reduced, so that the thread can be normally pulled through the inside of the elastic sleeve 9 during the subsequent sewing machine work, and the thread supply resistance is reduced.

[0044] As another embodiment of the application, the rotating drum 8, the elastic sleeve 9 and the gear ring 10 are provided with a slot 19 on one side. When the thread end of the new thread drum 4 is passed through the guide roller of the rack 2, in order to facilitate operation, the second thread end 34 is first passed through the inside of the fixed ring 5, then the second thread end 34 is pushed into the inside of the elastic sleeve 9 from the slot 19, and then the second thread end 34 is smoothly placed in the inside of the elastic sleeve 9 by slightly pulling back a small distance, so as to further reduce the difficulty of passing the second thread end 34 through the elastic sleeve 9.

[0045] It is worth noting that the slot 19 is moved to the top position by controlling the rotating drum 8 to rotate after the twisting is finished, so as to prevent the thread from being separated from the rotating drum 8 downwards through the slot 19 during normal thread supply.

[0046] The slot 19 side wall surface of the rotating drum 8 is respectively fixedly connected with the elastic sheet one 20 and the elastic sheet two 21; the elastic sheet one 20 and the elastic sheet two 21 are arranged in a staggered manner and are both inclined towards the center of the rotating drum 8. When the second thread end 34 is pushed into the elastic sleeve 9 through the slot 19, the thread end will in turn push the elastic sheet one 20 and the elastic sheet two 21 to deflect downwards, and then in the twisting and thread feeding process, the thread end can be locked in the rotating drum 8 by utilizing the characteristic that the elastic sheet one 20 and the elastic sheet two 21 cannot deflect upwards, further preventing the thread from being pulled outwards.

[0047] As another embodiment of the present application, a pair of supporting rollers 22 are arranged on the lower side of the rotating drum 8; the supporting rollers 22 are rotatably connected to the surface of the mounting seat 3 through a support; the supporting rollers 22 are in close contact with the rotating drum 8. By arranging the supporting rollers 22, the supporting rollers 22 can rotate together at the bottom when the rotating drum 8 rotates, thereby supporting the rotating drum 8 and improving the stability of the rotating drum 8 when moving.

[0048] As another embodiment of the present application, a group of coating boxes 23 (the number of the coating boxes 23 is preferably two) are uniformly arranged on the inner side of the rotating drum 8; a sliding block 24 is slidably and sealingly connected in the coating box 23; a spring two 25 is fixedly connected between the sliding block 24 and the coating box 23; a coating head 26 is fixedly connected to the side of the sliding block 24 away from the rotating drum 8; guide holes 27 are formed in the sliding block 24 and the coating head 26; the rotating drum 8 is designed as a hollow structure, and an auxiliary agent is stored in the rotating drum 8; the coating box 23 is communicated with the rotating drum 8 through a suction pipe 28; one-way valves are arranged in the suction pipe 28 and the guide holes 27; the supporting rollers 22 and the sliding block 24 are made of magnetic materials, and the supporting rollers 22 and the sliding block 24 attract each other when close to each other.

[0049] A pair of elastic sleeves 9 are arranged, and the pair of elastic sleeves 9 are communicated with each other through a conduit 29; the coating box 23 is arranged between the pair of elastic sleeves 9.

[0050] In the process of rotating and twisting the rotating drum 8, when the coating box 23 rotates to the position close to the supporting roller 22 at the bottom, the supporting roller 22 generates a magnetic attraction force on the sliding block 24 at this time, driving the sliding block 24 to move towards the rotating drum 8, and then the sliding block 24 extrudes the auxiliary agent in the coating box 23, extruding the auxiliary agent to the thread end through the guide holes 27; when the coating box 23 rotates to the top, the force of the supporting roller 22 on the sliding block 24 is weak, at this time the spring two 25 drives the sliding block 24 to move towards the center of the rotating drum 8, and then a negative pressure is generated in the coating box 23, the auxiliary agent in the rotating drum 8 is replenished into the coating box 23 through the suction pipe 28, thereby extruding the auxiliary agent to the overlapping section of the first thread end 33 and the second thread end 34 in the process of twisting in a continuous intermittent manner, so that the thread ends are twisted and the gaps between the thread ends are filled and bonded by the auxiliary agent at the same time, improving the butt joint strength and efficiency of the thread ends.

[0051] The above-mentioned auxiliary agent should adopt low viscosity, slow curing, high flexibility agent type, such as rosin gum, transparent nail polish, textile auxiliary agent and the like, to prevent the thread from being bonded inside the elastic sleeve 9, and to keep the elasticity and flexibility of the thread. It is worth noting that after the thread end is twisted and the elastic sleeve 9 is restored, the sewing machine should be started immediately to pull out the thread end bonding section from the elastic sleeve 9 to prevent the thread end from being bonded with the elastic sleeve 9 after the auxiliary agent is cured.

[0052] As another embodiment of the present application, a pair of the elastic sleeves 9 are fixedly connected with a storage member 30 at the corresponding positions of the coating box 23; the storage member 30 is fixedly connected with a transmission member 31 between the coating head 26; the storage member 30 and the transmission member 31 are made of elastic water-absorbing materials, such as sponge, porous foam and the like. When the elastic sleeve 9 is inflated and shrinks to the middle part, the storage member 30 can be driven to move and deform together with the thread end, so that the storage member 30 is attached to the thread end. After the coating head 26 extrudes the auxiliary agent, the auxiliary agent can enter the inside of the storage member 30 along the transmission member 31 under the capillary action of the transmission member 31 and the storage member 30. The storage member 30 can be used to apply the auxiliary agent to the thread end, which can improve the uniformity of the thread end coating, avoid the problem that the auxiliary agent is difficult to contact with the thread end due to the low pressure of the auxiliary agent extruded by the coating head 26, and avoid the problem that the storage member 30 is always in contact with the thread end and applies the auxiliary agent in the subsequent thread feeding process. When the elastic sleeve 9 is restored, the storage member 30 can be separated from the thread end together with the elastic sleeve 9.

[0053] The storage member 30 is designed to be curved, and the storage member 30 is protruded towards the center of the rotating drum 8; the storage member 30 is fixedly connected with a wave-shaped elastic holder 32 inside. The curved design of the storage member 30 can further improve the contact effect between the storage member 30 and the thread end, so as to facilitate the application of the auxiliary agent. The elastic holder 32 can improve the elastic deformation and restoration ability of the storage member 30 as the internal skeleton support of the storage member 30.

[0054] The above-mentioned front, back, left, right, up and down are based on the figures in the description Figure 1 The front of the device is defined as the front of the observer, the left of the observer is defined as the left, and the like.

[0055] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application.

[0056] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations and modifications are intended to be included within the scope of the application as defined in the following claims and the equivalents thereof.

Claims

1. A sewing machine thread stand convenient to use, comprising a base (1), a rack (2) and a mounting seat (3); the rack (2) is fixedly connected between the base (1) and the mounting seat (3); a group of thread drums (4) are placed on the surface of the base (1); characterized in that It also includes a thread feeding joint assembly; the thread feeding joint assembly is arranged on the upper side of the mounting seat (3); the thread feeding joint assembly is used for feeding the thread and connecting the thread end; The thread feeding joint assembly comprises a fixed ring (5) fixedly connected to the surface of the mounting seat (3); the fixed ring (5) is rotatably connected with a movable ring (6) inside; a rotating drum (8) is fixedly connected to the elastic sleeve (9) inside the rotating drum (8); the rotating drum (8) is fixedly connected with a gear ring (10) outside; a motor (11) is fixedly connected to the surface of the mounting seat (3); the output shaft of the motor (11) is connected with a gear (12), and the gear (12) is engaged with the gear ring (10); The elastic sleeve (9) is designed as a hollow structure; the movable ring (6) and the fixed ring (5) are rotatably and sealingly connected; the connecting pipes (13) are arranged in the connecting rods (7); one end of the connecting pipe (13) is communicated with the fixed ring (5), and the other end is communicated with the elastic sleeve (9); A gas conveying assembly is arranged between the mounting seat (3) and the rack (2); the gas conveying assembly is used for conveying compressed air into the fixed ring (5) and controlling the inflation deformation of the elastic sleeve (9); The gas conveying assembly supplies gas to the inside of the fixed ring (5), and the compressed air enters the inside of the elastic sleeve (9) through the fixed ring (5) and the connecting pipe (13), so as to make the elastic sleeve (9) inflate and deform, and then the elastic sleeve (9) shrinks to the middle, the inner diameter gradually decreases, and the thread end is clamped.

2. The thread stand of claim 1, wherein: The gas conveying assembly comprises a gas storage cylinder (14) fixedly connected to the lower side of the mounting seat (3); a pressing plate (15) is slidingly and sealingly connected in the gas storage cylinder (14); a spring (16) is fixedly connected between the pressing plate (15) and the gas storage cylinder (14); an electric push rod (17) is arranged between the lower side of the pressing plate (15) and the rack (2); the top of the gas storage cylinder (14) is communicated with the fixed ring (5) through an air pipe (18).

3. The thread stand of claim 1, wherein: The rotating drum (8), the elastic sleeve (9) and the gear ring (10) are provided with a slot (19) on one side.

4. The thread stand of claim 3, wherein: The side wall surface of the slot (19) of the rotating drum (8) is fixedly connected with a spring piece (20) and a spring piece (21); the spring piece (20) and the spring piece (21) are arranged in a staggered manner and inclined towards the center of the rotating drum (8).

5. The thread stand of claim 1, wherein: A pair of supporting rollers (22) are arranged on the lower side of the rotating drum (8); the supporting rollers (22) are rotatably connected to the surface of the mounting seat (3) through a support; the supporting rollers (22) and the rotating drum (8) are mutually attached.

6. A thread stand for a sewing machine according to claim 5, wherein: The rotating drum (8) is uniformly distributed with a group of coating boxes (23); the sliding block (24) is slidably connected inside the coating box (23); the spring two (25) is fixedly connected between the sliding block (24) and the coating box (23); the coating head (26) is fixedly connected to the side of the sliding block (24) away from the rotating drum (8); the guide hole (27) is formed in the sliding block (24) and the coating head (26); The rotating drum (8) is designed as a hollow structure, and the rotating drum (8) stores an auxiliary agent; the coating box (23) and the rotating drum (8) are communicated through the suction pipe (28); the one-way valve is arranged in the suction pipe (28) and the guide hole (27); the magnetic material is used to make the carrier roller (22) and the sliding block (24), and the carrier roller (22) and the sliding block (24) attract each other when they are close.

7. A thread stand for a sewing machine according to claim 6, wherein: The elastic sleeve (9) is provided with a pair of elastic sleeves (9), and the pair of elastic sleeves (9) are communicated with each other through the conduit (29); the coating box (23) is arranged between the pair of elastic sleeves (9).

8. The thread stand of claim 7, wherein: A pair of the elastic sleeve (9) is fixedly connected with the storage part (30) at the corresponding position of the coating box (23); the transmission part (31) is fixedly connected between the storage part (30) and the coating head (26); the storage part (30) and the transmission part (31) are made of elastic water-absorbing material.

9. The thread stand of claim 8, wherein: The storage part (30) is designed as a curved shape, and the storage part (30) is protruded towards the center of the rotating drum (8); the wave-shaped elastic retainer (32) is fixedly connected inside the storage part (30).

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