Chemical fiber double twisting spindle yarn lubricating device

Abstract

The application discloses a chemical fiber double-twist spindle yarn lubricating device, which comprises a spindle sleeve, a sleeve is fixedly connected in the spindle sleeve, a lubricating mechanism and a twisting unit are arranged in the sleeve, the twisting unit is located below the lubricating mechanism, the lubricating mechanism comprises an oil storage part, the oil storage part comprises an oil storage cavity, an oil feeding assembly is arranged at the upper portion of the oil storage cavity, the oil feeding assembly comprises a cover body and a capillary belt, the cover body comprises a supporting seat, the supporting seat covers the upper portion of the oil storage cavity, the supporting seat comprises an oil outlet and a through hole, one end of the capillary belt is located in the oil storage cavity, and the other end of the capillary belt penetrates through the oil outlet and is located at the through hole. One end of the capillary belt is in contact with the oil storage cavity, and the other end is located at the through hole. The capillary belt transports the oil in the oil storage cavity to one end located at the through hole through the capillary principle. When the yarn penetrates through the through hole, the yarn is in contact with the capillary belt to realize the oil feeding operation of the yarn, and the damage of the yarn during the oil feeding operation is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of double twisting device, more particularly to a lubricating device for chemical fiber double twisting spindle yarn. BACKGROUND

[0002] In order to reduce the damage of yarn during double twisting, a small amount of oil is usually added to the surface of the yarn before double twisting. Patent No. CN109487381A discloses a built-in yarn oil lubrication method and device for chemical fiber double twisting spindle yarn. The patent proposes that when the yarn passes through the oil permeation yarn channel during twisting, the yarn contacts the inner wall of the oil permeation yarn channel, and the oil permeated through the oil permeation yarn channel contacts the yarn, thereby achieving oil lubrication of the yarn. However, this method has some disadvantages: first, the oil permeation yarn channel is relatively long, and the yarn contacts the oil permeation yarn channel too much, which may damage the yarn to some extent during the contact process, thereby increasing the risk of yarn breakage. Second, when the spindle is not in use, the oil permeation yarn channel will continue to slowly permeate oil, resulting in loss of lubricating oil in the oil storage cavity and frequent oiling operations, thereby increasing the workload. Therefore, it is necessary to improve this device. SUMMARY

[0003] The present application aims to overcome the shortcomings of the prior art and provide a lubricating device for chemical fiber double twisting spindle yarn. One end of the capillary belt is in contact with the oil storage cavity, and the other end is located at the through hole. The capillary belt transports the oil in the oil storage cavity to one end of the through hole through the capillary principle. When the yarn passes through the through hole, it contacts the capillary belt to achieve oiling of the yarn, thereby reducing the damage to the yarn during oiling.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a lubricating device for chemical fiber double twisting spindle yarn, comprising a spindle sleeve, a sleeve is fixedly connected inside the spindle sleeve, a lubricating mechanism and a twisting unit are arranged inside the sleeve, the twisting unit is located below the lubricating mechanism, the lubricating mechanism comprises an oil storage member, the oil storage member comprises an oil storage cavity, an oiling assembly is arranged on the upper part of the oil storage cavity, the oiling assembly comprises a cover body and a capillary belt, the cover body comprises a support seat, the support seat covers the upper part of the oil storage cavity, the support seat comprises an oil outlet and a through hole, one end of the capillary belt is located in the oil storage cavity, and the other end of the capillary belt penetrates through the oil outlet and is located at the through hole.

[0005] Further, a first porcelain bowl is arranged above the support seat, the part of the capillary belt above the oil outlet is located between the support seat and the first porcelain bowl, the first porcelain bowl is movably connected with the sleeve, and the first porcelain bowl can move up and down so that the lower part of the first porcelain bowl can abut against the upper part of the support seat and press the part of the capillary belt above the oil outlet.

[0006] Further, the cover further comprises a connecting sleeve above the support base, the connecting sleeve is movably connected with the inner wall of the sleeve, the connecting sleeve is connected with the support base through a connecting ring, the connecting ring is a flexible member, the connecting sleeve is sleeved outside the first porcelain bowl and is fixedly connected with the first porcelain bowl, the first porcelain bowl, the support base and the connecting ring form an avoiding cavity, and the part of the capillary belt higher than the oil outlet is located in the avoiding cavity.

[0007] Further, the upper part of the support base is provided with an annular groove, the annular groove is located outside the through hole, the lower part of the first porcelain bowl is provided with a boss, the lower part of the boss can abut against the upper part of the support base, and the lower part of the boss is provided with an annular rib which can be inserted into the annular groove.

[0008] Further, the first porcelain bowl comprises an oil inlet hole, the lower part of the oil inlet hole is provided with a mounting groove in communication with the oil inlet hole, the upper part of the support base is provided with an oil injection connector, the oil injection connector is located in the avoiding cavity, the upper end of the oil injection connector is inserted into the mounting groove, the oil injection connector is provided with an oil injection port, the oil inlet hole is in communication with the oil storage cavity through the oil injection port, and the oil injection port is a cutout.

[0009] Further, the cover is a rubber member, the outer wall of the connecting ring is provided with a plurality of reinforcing ribs which are uniformly distributed along the axis of the connecting ring, the reinforcing ribs are connected with the connecting sleeve and the support base respectively, and the capillary belt is a fiber belt.

[0010] Further, the oil storage member comprises a yarn passing channel, the first porcelain bowl comprises a yarn passing port, the yarn passing port, the through hole and the yarn passing channel are coaxially arranged, the size of the through hole is greater than that of the opening at the lower end of the yarn passing port and smaller than that of the yarn passing channel, the upper end of the yarn passing channel is embedded with a porcelain ring, the inner diameter of the porcelain ring is smaller than that of the through hole, and the oil storage cavity is located outside the yarn passing channel.

[0011] Further, the connecting sleeve is fixedly connected with a bushing outside, the upper part of the first annular table of the first porcelain bowl abuts against the upper part of the bushing, the side wall of the bushing is gap-fitted with the inner wall of the sleeve, and the bushing can move up and down along the inner wall of the sleeve.

[0012] Further, the upper end of the sleeve is connected with a limiting assembly, the lower part of the limiting assembly abuts against the upper part of the oil feeding assembly, the limiting assembly can push the first porcelain bowl to move downward, the limiting assembly comprises an adapter sleeve, a lifting sleeve and a flat pad, the adapter sleeve is fixedly connected with the inner wall of the sleeve, the lifting sleeve is inserted into the adapter sleeve and is connected with the adapter sleeve through threads, and the upper part of the flat pad abuts against the lower part of the lifting sleeve and the lower part of the flat pad abuts against the upper part of the first porcelain bowl.

[0013] Further, the spindle sleeve is internally provided with a support rib, the number of the twisting units is multiple, the upper portion of the uppermost twisting unit abuts against the lower portion of the oil storage member, the lower portion of the lowermost twisting unit abuts against the upper portion of the support rib, the twisting unit comprises a second porcelain bowl, the second porcelain bowl is internally provided with a tension ball, and the upper portion of the spindle sleeve is threadedly connected with a gasket ring.

[0014] In summary, the present application has the following advantages:

[0015] 1. The capillary belt can attract the lubricating oil in the oil storage cavity to the upper end of the capillary belt through the capillary principle, when the yarn passes through the through hole, the yarn contacts the capillary belt, so that the oil on the capillary belt contacts the surface of the yarn, realizing the oiling and lubrication of the yarn, and since the capillary belt is polyester fiber yarn and the contact range with the yarn is small, the damage to the yarn can be reduced while the oiling of the yarn is realized, thereby reducing the risk of yarn breakage.

[0016] 2. When the first porcelain bowl moves downward, the lower portion of the first porcelain bowl can first abut against the upper surface of the capillary belt, the first porcelain bowl continues to move downward, the part of the capillary belt above the oil outlet is pushed to move downward, so that the lower portion of the capillary belt abuts against the upper portion of the support seat, the first porcelain bowl continues to move downward, the support seat deforms, and the first porcelain bowl and the support seat jointly extrude the capillary belt, at this time, the capillary channel of the capillary belt is equivalent to being cut off, and the lubricating oil cannot be transported to the area of the capillary belt located at the through hole, through this design, the area of the capillary belt located at the through hole does not continuously seep oil when the spindle is not used, thereby effectively reducing the loss of lubricating oil in the oil storage cavity. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the working of the embodiment;

[0018] Figure 2 It is a sectional view of the twisting mechanism;

[0019] Figure 3 It is a sectional view of the lubricating mechanism;

[0020] Figure 4 It is Figure 3 a partial schematic view;

[0021] Figure 5 It is an explosion view of the oiling assembly;

[0022] Figure 6 It is a structural schematic view of the cover body.

[0023] Mark No.: 1, spindle sleeve; 11, gasket ring; 12, support rib; 2, oil storage part; 21, yarn passage; 22, oil storage cavity; 23, porcelain ring; 3, cover body; 31, connecting sleeve; 32, support seat; 33, connecting ring; 34, oil outlet; 35, avoiding cavity; 36, oil injection joint; 361, oil injection port; 37, through hole; 38, annular groove; 39, reinforcing rib; 4, first porcelain bowl; 41, yarn passing port; 42, oil inlet hole; 43, mounting groove; 44, boss; 45, annular rib; 46, first annular table; 5, bushing; 6, limiting assembly; 61, adapter sleeve; 62, lifting sleeve; 621, second annular table; 63, flat pad; 7, capillary strip; 8, twisting unit; 81, second porcelain bowl; 82, tension ball; 9, sleeve; 100, bobbin seat; 200, yarn; 300, yarn bobbin; 400, yarn outlet; 500, yarn guide porcelain piece; 1000, oiling assembly; 2000, lubricating mechanism. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0025] As shown in the drawings, Figures 1 to 6 The present embodiment discloses a chemical fiber double-twisted spindle yarn lubricating device, which comprises a spindle sleeve 1, the spindle sleeve 1 is internally and fixedly connected with a sleeve 9, the sleeve 9 is internally provided with a lubricating mechanism 2000 and a twisting unit 8, the twisting unit 8 is located below the lubricating mechanism 2000, the spindle sleeve 1 is internally provided with a support rib 12, the number of the twisting unit 8 is multiple, preferably two in the present embodiment, the upper part of the uppermost twisting unit 8 abuts against the lower part of the lubricating mechanism 2000, and the lower part of the lowermost twisting unit 8 abuts against the upper part of the support rib 12, the twisting unit 8 comprises a second porcelain bowl 81, the second porcelain bowl 81 is internally provided with a tension ball 82, the upper part of the spindle sleeve 1 is threadedly connected with a gasket ring 11, and the spindle sleeve 1 is externally sleeved with a yarn bobbin 300;

[0026] As shown in the drawings, Figure 1As shown, in operation, the yarn drum 300 is installed on the bobbin holder 100, the yarn 200 is unwound from the yarn drum 300, passes through the pad ring 11, is inserted into the spindle sleeve 1 from the upper end of the pad ring 11, and sequentially passes through the lubricating mechanism 2000 and the twisting unit 8. When the yarn 200 passes through the twisting unit 8, it is twisted at the contact between the second porcelain bowl 81 and the tension ball 82, and then extends out of the yarn outlet 400. After the yarn 200 passes out of the yarn outlet 400, an outer loop is formed in the outer air zone, and then the yarn 200 enters the winding process through the guide porcelain piece 500, completing the double-twist twisting process. After the yarn 200 passes through the lubricating mechanism 2000, the surface of the yarn 200 can be oiled, reducing the number of yarn breakage.

[0027] As shown in Figure 2 and Figure 3 The lubricating mechanism 2000 includes an oil storage member 2 that abuts against the upper part of the uppermost twisting unit 8. The oil storage member 2 includes an oil storage cavity 22 and a yarn passage 21. The oil storage cavity 22 is located outside the yarn passage 21, and the oil storage cavity 22 stores lubricating oil. A porcelain ring 23 is embedded in the upper end of the yarn passage 21. The inner diameter of the porcelain ring 23 is smaller than the cross-sectional size of the yarn passage 21. The yarn passage 21 is located directly above the twisting unit 8. An oiling assembly 1000 is provided on the upper part of the oil storage cavity 22. The yarn 200 passes through the oiling assembly 1000, the porcelain ring 23, the yarn passage 21, and the twisting unit 8 from top to bottom. The porcelain ring 23 can guide and limit the yarn 200, preventing the yarn 200 from contacting the yarn passage 21 during twisting and preventing damage to the yarn 200.

[0028] As shown in Figures 3 to 5 The oiling assembly 1000 includes a cover 3 and a capillary tape 7. The cover 3 is a rubber member. The cover 3 includes a support seat 32 that covers the upper part of the oil storage cavity 22. The upper end of the oil storage member 2 is inserted into the inside of the support seat 32 and fixed. The support seat 32 includes an oil outlet 34 and a through hole 37. The through hole 37 is located directly above the porcelain ring 23, and the inner diameter of the porcelain ring 23 is smaller than the through hole 37. The oil outlet 34 is a flat structure. One end of the capillary tape 7 is located in the oil storage cavity 22 and immersed in the lubricating oil. The other end of the capillary tape 7 penetrates through the oil outlet 34 and is located at the through hole 37. The capillary tape 7 is a fiber tape. The fiber tape is formed by arranging polyester fiber yarns side by side. Since the lubricating oil is an oily material, the capillary tape 7 is made of hydrophobic polyester fiber, which can improve wettability.

[0029] The capillary belt 7 can attract the lubricating oil in the oil storage cavity 22 to the upper end of the capillary belt 7 through the capillary principle. When the yarn 200 passes through the through hole 37, the yarn 200 contacts the capillary belt 7, so that the oil on the capillary belt 7 contacts the surface of the yarn 200, and the oiling and lubrication of the yarn are realized. Since the capillary belt 7 is a polyester fiber yarn and the contact range with the yarn 200 is small, the damage to the yarn 200 can be reduced while the yarn 200 is oiled, thereby reducing the risk of yarn 200 breakage.

[0030] As shown in Figure 4 The first porcelain bowl 4 is arranged above the support seat 32, and the first porcelain bowl 4 includes a yarn passing hole 41. The yarn passing hole 41, the through hole 37 and the yarn passing channel 21 are coaxially arranged. The size of the through hole 37 is greater than the opening of the lower end of the yarn passing hole 41 and smaller than the yarn passing channel 21. The yarn 200 is guided and limited by the yarn passing hole 41 and the porcelain ring 23, so that the yarn 200 can effectively avoid contacting the inner wall of the through hole 37 during the twisting process, thereby reducing the risk of yarn 200 breakage.

[0031] The first porcelain bowl 4 includes an oil inlet hole 42, which is vertically arranged. The lower part of the oil inlet hole 42 is provided with a mounting groove 43 in communication with the oil inlet hole 42. The upper part of the support seat 32 is provided with an oil injection connector 36. The upper end of the oil injection connector 36 is inserted into the mounting groove 43, and the upper end of the oil injection connector 36 has a movable space with the upper end of the mounting groove 43. The oil injection connector 36 is provided with an oil injection hole 361. The oil inlet hole 42 and the oil storage cavity 22 are in communication through the oil injection hole 361. The oil injection hole 361 is a cutout. Therefore, the oiling operation of the oil storage cavity 22 can be realized by using a syringe (not shown in the figure). Specifically, when it is necessary to oil the oil storage cavity 22, the gasket ring 11 is unscrewed, the needle of the syringe penetrates the oil inlet hole 42, the oil injection connector 36 and the oil injection hole 361 in sequence, and is inserted into the oil storage cavity 22, so that the oiling operation can be realized. The operation is convenient and efficient. Since the cover body 3 is made of rubber, the oil injection hole 361 can be automatically closed after the oiling is completed, so as to avoid the oil in the oil storage cavity 22 from seeping out from the oil injection connector 36, and the sealing reliability is good.

[0032] The part of the capillary belt 7 higher than the oil outlet 34 is located between the support base 32 and the first porcelain bowl 4, the first porcelain bowl 4 is movably connected with the sleeve 9, the cover body 3 further comprises a connecting sleeve 31 located above the support base 32, the connecting sleeve 31 is movably connected with the inner wall of the sleeve 9, the outer side of the connecting sleeve 31 is fixedly connected with the bushing 5, the upper part of the first porcelain bowl 4 is provided with a first annular table 46, the lower part of the first annular table 46 abuts against the upper part of the bushing 5, the side wall of the bushing 5 is in clearance fit with the inner wall of the sleeve 9, the bushing 5, the connecting sleeve 31 and the first porcelain bowl 4 can move up and down synchronously, so that the lower part of the first porcelain bowl 4 can abut against the upper part of the support base 32 and extrude the part of the capillary belt 7 higher than the oil outlet 34, specifically, the bushing 5 is a metal piece, and the bushing 5 is integrally formed with the cover body 3 by a secondary injection molding mode, since the connecting sleeve 31 is made of rubber material, by arranging the bushing 5, the fixing effect of the first porcelain bowl 4 can be improved, and the cooperation between the bushing 5 and the inner wall of the sleeve 9 can be effectively improved, so that the bushing 5 moves up and down more smoothly.

[0033] When the first porcelain bowl 4 moves downward, the lower part of the first porcelain bowl 4 can first abut against the upper surface of the capillary belt 7, the first porcelain bowl 4 continues to move downward, can push the part of the capillary belt 7 higher than the oil outlet 34 to move downward, so that the lower part of the capillary belt 7 abuts against the upper part of the support base 32, the first porcelain bowl 4 continues to move downward, the support base 32 is deformed, and the first porcelain bowl 4 and the support base 32 extrude the capillary belt 7 together, at this time, the capillary channel of the capillary belt 7 is equivalent to being blocked, and the lubricating oil cannot be transported to the area of the capillary belt 7 located at the through hole 37, by this design, when the spindle is not used, the area of the capillary belt 7 located at the through hole 37 will not continuously seep oil, so that the loss of the lubricating oil in the oil storage cavity 22 can be effectively reduced.

[0034] Specifically, the upper part of the support base 32 is provided with an annular groove 38, the annular groove 38 is located at the outer periphery of the through hole 37, the lower part of the first porcelain bowl 4 is provided with a boss 44, the lower part of the boss 44 can abut against the upper part of the support base 32, the lower part of the boss 44 is provided with an annular rib 45, the annular rib 45 can be inserted into the annular groove 38, by the cooperation of the annular rib 45 and the annular groove 38, the blocking effect of the capillary channel of the capillary belt 7 can be effectively improved.

[0035] The connecting sleeve 31 and the support base 32 are connected by a connecting ring 33, which is a flexible component. The connecting sleeve 31, the support base 32, and the connecting ring 33 are integrally formed. The connecting sleeve 31 is sleeved on the outside of the first porcelain bowl 4 and fixedly connected to the first porcelain bowl 4. The connecting ring 33 has an arc-shaped cross-section, thin walls, and is easily deformable. When the first porcelain bowl 4 descends, the connecting ring 33 can deform, and a clearance cavity 35 is formed between the first porcelain bowl 4, the support base 32, and the connecting ring 33. The portion of the capillary band 7 above the oil outlet 34 is... The oil injection connector 36 is located inside the relief cavity 35. The relief cavity 35 is isolated from the inner wall of the sleeve 9. In this way, the lubricating oil can be effectively prevented from seeping from the periphery of the cover 3 to the inner wall of the sleeve 9. Furthermore, the arc-shaped cross-section of the connecting ring 33 protrudes towards the relief cavity 35. When the first ceramic cup 4 descends, the connecting ring 33 can deform towards the relief cavity 35. The support seat 32 is squeezed by the first ceramic cup 4 and deformed by the connecting ring 33, thereby closing the upper end of the oil outlet 34 and preventing the lubricating oil from leaking during the transportation of the spindle.

[0036] Specifically, the outer wall of the connecting ring 33 is provided with a plurality of reinforcing ribs 39 evenly distributed along its axis. The reinforcing ribs 39 are connected to the connecting sleeve 31 and the support base 32 respectively. By setting the reinforcing ribs 39, it is beneficial to improve the reset effect of the connecting sleeve 31.

[0037] like Figure 3 As shown, the upper end of the sleeve 9 is connected to a limiting component 6, and the lower part of the limiting component 6 abuts against the upper part of the oiling component 1000. The limiting component 6 can push the first ceramic bowl 4 downward. The limiting component 6 includes an adapter sleeve 61, a lifting sleeve 62, and a flat washer 63. The adapter sleeve 61 is fixedly connected to the inner wall of the sleeve 9. The lifting sleeve 62 is inserted into the adapter sleeve 61 and is threadedly connected to the adapter sleeve 61. The upper part of the flat washer abuts against the lower part of the lifting sleeve 62, and the lower part abuts against the upper part of the first ceramic bowl 4. The upper part of the lifting sleeve 62 is provided with a second annular platform 621. The outer cross section of the second annular platform 621 is hexagonal. By rotating the lifting sleeve 62, the first ceramic bowl 4 can be pushed down, thereby blocking the capillary channel. When the lifting sleeve 62 moves upward, the connecting ring 33 and the reinforcing rib 39 are restored, thereby driving the first ceramic bowl 4 to rise and the capillary channel is connected. The flat pad 63 is made of rubber. By setting the flat pad 63, the first ceramic bowl 4 can be protected and prevent the lifting sleeve 62 from directly contacting the first ceramic bowl 4.

[0038] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A lubricating device for doubled spun synthetic fibre spooling yarn, characterized in that, The application relates to a lubricating mechanism for a spinning unit, which comprises a spindle sleeve (1) internally fixedly connected with a sleeve (9), wherein the sleeve (9) is internally provided with a lubricating mechanism (2000) and a twisting unit (8), the lubricating mechanism (2000) comprises an oil storage part (2), the oil storage part (2) comprises an oil storage cavity (22), the upper portion of the oil storage cavity (22) is provided with an oil feeding assembly (1000), the oil feeding assembly (1000) comprises a cover body (3) and a capillary belt (7), the cover body (3) comprises a supporting seat (32), the supporting seat (32) covers the upper portion of the oil storage cavity (22), the supporting seat (32) comprises an oil outlet (34) and a through hole (37), one end of the capillary belt (7) is located in the oil storage cavity (22), and the other end of the capillary belt (7) penetrates through the oil outlet (34) and is located at the through hole (37). The upper portion of the supporting seat (32) is provided with a first porcelain bowl (4), the portion of the capillary belt (7) higher than the oil outlet (34) is located between the supporting seat (32) and the first porcelain bowl (4), the first porcelain bowl (4) is movably connected with the sleeve (9), and the first porcelain bowl (4) can move up and down, so that the lower portion of the first porcelain bowl (4) can abut against the upper portion of the supporting seat (32) and extrude the portion of the capillary belt (7) higher than the oil outlet (34). When the first porcelain bowl (4) moves downward, the lower portion of the first porcelain bowl (4) can first abut against the upper surface of the capillary belt (7), the first porcelain bowl (4) continues to move downward, the portion of the capillary belt (7) higher than the oil outlet (34) is pushed to move downward, the lower portion of the capillary belt (7) abuts against the upper portion of the supporting seat (32), the first porcelain bowl (4) continues to move downward, the supporting seat (32) is deformed, the first porcelain bowl (4) and the supporting seat (32) extrude the capillary belt (7) together, at this moment, the capillary channel of the capillary belt (7) is equivalent to being cut off, and lubricating oil cannot be transported to the area of the capillary belt (7) located at the through hole (37).

2. The synthetic fiber double twisted spindle yarn lubricating device according to claim 1, wherein, The cover body (3) further comprises a connecting sleeve (31) located above the supporting seat (32), the connecting sleeve (31) is movably connected with the inner wall of the sleeve (9), the connecting sleeve (31) is connected with the supporting seat (32) through a connecting ring (33), the connecting ring (33) is a flexible part, the connecting sleeve (31) is arranged outside the first porcelain bowl (4) and is fixedly connected with the first porcelain bowl (4), an avoiding cavity (35) is formed between the first porcelain bowl (4) and the supporting seat (32) and the connecting ring (33), and the portion of the capillary belt (7) higher than the oil outlet (34) is located in the avoiding cavity (35).

3. A synthetic fiber double twisted spindle yarn lubricating device according to claim 2, wherein The upper portion of the supporting seat (32) is provided with an annular groove (38), the annular groove (38) is located at the outer periphery of the through hole (37), the lower portion of the first porcelain bowl (4) is provided with a boss (44), the lower portion of the boss (44) can abut against the upper portion of the supporting seat (32), the lower portion of the boss (44) is provided with an annular rib (45), and the annular rib (45) can be inserted into the annular groove (38).

4. The synthetic fiber double twisted spindle yarn lubricating device according to claim 2, wherein The first porcelain bowl (4) comprises an oil inlet hole (42), the lower part of the oil inlet hole (42) is provided with a mounting groove (43) in communication with the oil inlet hole (42), the upper part of the support seat (32) is provided with an oil injection joint (36), the oil injection joint (36) is located in the avoiding cavity (35), the upper end of the oil injection joint (36) is inserted into the mounting groove (43), the oil injection joint (36) is provided with an oil injection port (361) inside, the oil inlet hole (42) is in communication with the oil storage cavity (22) through the oil injection port (361), and the oil injection port (361) is a cutout.

5. The synthetic fiber double twisted spindle yarn lubricating device according to claim 4, wherein The cover (3) is a rubber part, the outer wall of the connecting ring (33) is provided with a plurality of reinforcing ribs (39) uniformly distributed along the axis, the reinforcing ribs (39) are connected with the connecting sleeve (31) and the support seat (32) respectively, and the capillary band (7) is a fiber band.

6. The synthetic fiber double twisted spindle yarn lubricating device according to claim 2, wherein The oil storage part (2) comprises a yarn passing channel (21), the first porcelain bowl (4) comprises a yarn passing port (41), the yarn passing port (41), the through hole (37) and the yarn passing channel (21) are coaxially arranged, the size of the through hole (37) is greater than that of the opening of the lower end of the yarn passing port (41) and smaller than that of the yarn passing channel (21), the upper end of the yarn passing channel (21) is embedded with a porcelain ring (23), the inner diameter of the porcelain ring (23) is smaller than that of the through hole (37), and the oil storage cavity (22) is located outside the yarn passing channel (21).

7. The synthetic fiber double twisted spindle yarn lubricating device according to claim 2, wherein The connecting sleeve (31) is fixedly connected with a bushing (5) outside, the first porcelain bowl (4) is provided with a first annular table (46) at the upper part, the first annular table (46) abuts against the upper part of the bushing (5) at the lower part, the side wall of the bushing (5) is gap-fitted with the inner wall of the sleeve (9), and the bushing (5) can move up and down along the inner wall of the sleeve (9).

8. The synthetic fiber double twisted spindle yarn lubricating device according to claim 7, wherein The upper end of the sleeve (9) is connected with a limiting assembly (6), the lower part of the limiting assembly (6) abuts against the upper part of the oil feeding assembly (1000), the limiting assembly (6) can push the first porcelain bowl (4) to move downward, the limiting assembly (6) comprises an adapter sleeve (61), a lifting sleeve (62) and a flat pad (63), the adapter sleeve (61) is fixedly connected with the inner wall of the sleeve (9), the lifting sleeve (62) is inserted into the adapter sleeve (61) and connected with the adapter sleeve (61) through threads, and the upper part of the flat pad (63) abuts against the lower part of the lifting sleeve (62) and the lower part abuts against the upper part of the first porcelain bowl (4).

9. The synthetic fiber double twisted spindle yarn lubricating device according to claim 1, wherein, The inside of the spindle sleeve (1) is provided with a support rib (12), the number of the twisting units (8) is multiple, the upper part of the uppermost twisting unit (8) abuts against the lower part of the oil storage part (2), the lower part of the lowermost twisting unit (8) abuts against the upper part of the support rib (12), the twisting unit (8) comprises a second porcelain bowl (81), the second porcelain bowl (81) is provided with a tension ball (82) inside, and the upper part of the spindle sleeve (1) is threadedly connected with a gasket ring (11).

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