A floating mechanism for the drive shaft of an anti-radial force knitting machine

Abstract

The present invention discloses a floating mechanism for the drive shaft of an anti-radial force knitting machine. The external oil source enters through the bottom of the shaft rod and enters the gear and the mating surface of the dial and the shaft rod through the static pressure oil holes distributed on the shaft rod. The surface micro-texture inside the dial is used to store lubricating oil and impurities, forming a pressure oil film on the contact surface of the kinematic pair to reduce the wear of the shaft rod. The static pressure oil holes on one side of the shaft rod further offset the unbalanced radial force formed when the gear rotates. An axial compensation device of a pre-tightening spring and upper and lower friction rings is adopted at the bottom of the gear, so as to realize the axial automatic compensation of the dial.

Description

Technical Field

[0001] The present invention relates to the technical field of knitting machines, and particularly relates to a floating mechanism for a driving shaft of an anti-radial force knitting machine. Background Art

[0002] During the operation of a knitting machine, the arrangement of gears will cause unbalanced radial forces on the gear shafts. Long-term high-speed operation will exacerbate the wear between the shaft rods and the gears, and the axial wear of the gears will cause the dial to move axially. Long-term operation will cause the position of the dial to change, which will further exacerbate the frictional wear during the movement of the spindles. This not only results in a huge noise during operation but also causes thread dropping problems during the knitting process of the knitting machine. To solve the above problems, improving or applying a new type of shaft rod and driving shaft floating mechanism is one of the effective measures to reduce the frictional wear and noise of the knitting machine. Summary of the Invention

[0003] Aiming at the above technical deficiencies, the purpose of the present invention is to provide a floating mechanism for a driving shaft of an anti-radial force knitting machine, which can reduce the wear of the shaft rod, weaken the unbalanced radial force formed when the gear rotates, and can realize the axial automatic compensation of the dial.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a floating mechanism for a driving shaft of an anti-radial force knitting machine, including a shaft rod fixed at the bottom on the knitting machine platform. An oil cavity arranged in the same axial direction as the shaft rod is provided inside the shaft rod, and one end of the oil cavity close to the knitting machine platform is used to connect to an external oil circuit;

[0006] A number of static pressure oil holes communicating with the oil cavity are arranged on the outer wall of the shaft rod, and the arrangement direction of the static pressure oil holes is parallel to the axial direction of the shaft rod;

[0007] A boss is fixed at the lower end of the shaft rod, and a support ring nested outside the shaft rod and capable of sliding along the shaft rod is provided above the boss;

[0008] A fixed sleeve for restricting its rotation is nested on the outer wall of the support ring, and the fixed sleeve is fixedly connected to the boss by bolts;

[0009] The shaft rod is further sequentially nested with a lower friction ring, an upper friction ring, a herringbone gear, and a dial that are pressed together above the support ring;

[0010] An annular groove is provided at one end of the herringbone gear in contact with the upper friction ring, and a convex platform adapted to the annular groove is provided on the upper friction ring;

[0011] One end of the herringbone gear contact dial is provided with a plurality of rectangular grooves, and the dial is provided with a plurality of rectangular bosses adapted to the rectangular grooves to realize the operation of the herringbone gear driving the dial;

[0012] The surface of the inner cavity of the dial is provided with a plurality of surface micro-textures for storing lubricating oil and solid impurities; the upper end of the shaft rod is threadedly connected with a nut, and the nut axially fixes the entire floating mechanism by pressing the dial and the preloading spring.

[0013] The boss is provided with a spring seat for contacting the preloading spring. One side of the bottom of the spring seat is closely attached to the boss, and the other side of the spring seat is provided with a spring groove for the preloading spring to be embedded.

[0014] Preferably, a plurality of semi-circular bosses are evenly distributed on the outer ring of the support ring, and a plurality of semi-circular grooves adapted to the semi-circular bosses are opened on the inner ring of the fixed sleeve.

[0015] Preferably, one side of the support ring close to the lower friction ring is provided with a plurality of rectangular bosses for closely attaching to the lower friction ring. The upper friction ring and the lower friction ring are closely attached to each other. The support ring is pushed by the preloading spring to automatically axially compensate the dial, so that the axial position of the dial remains unchanged.

[0016] Preferably, a sealing groove for placing a sealing ring is opened on the upper friction ring. The sealing ring is provided to ensure the overall oil film quality, improve the lubrication effect, prevent solid impurities from entering the internal structure of the moving pair of the shaft rod and the dial, and extend the service life.

[0017] Preferably, the surface micro-texture is a groove in the shape of a rectangular groove to realize the storage of lubricating oil and the storage of solid impurities. When the dial rotates, the lubricating oil in the surface micro-texture drives the lubrication of the surface of the shaft rod, thereby improving the lubrication effect.

[0018] Preferably, the bottom of the shaft rod is provided with an external thread for connecting the knitting machine platform, and one end of the oil cavity close to the knitting machine platform is provided with an internal thread for connecting the external oil circuit.

[0019] Preferably, a through hole for the bolt to pass through is opened on the boss, and a threaded hole adapted to the bolt is opened on the fixed sleeve.

[0020] Preferably, an end face bearing in static fit with the upper end face of the dial is further provided on the shaft rod, and a groove for the end face bearing to be embedded is provided on the upper end face of the dial.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The shaft rod adopts active pressure oil lubrication, and the static pressure oil holes are distributed from top to bottom, realizing the lubrication of the shaft rod from top to bottom, reducing the wear on the shaft rod generated by the operation of the knitting machine gear set, and extending the service life.

[0023] 2. The static pressure oil holes are evenly distributed in the fixed direction of the shaft rod, and the pressure of the lubricating oil cancels out the unbalanced radial force generated on the shaft rod during the operation of the knitting machine gear set, preventing wear of the shaft rod in a single direction.

[0024] 3. Lubrication is achieved by the surface micro-texture in the inner cavity of the dial, which is a rectangular groove-shaped recess. It can store oil and impurities; when the dial rotates, it drives the lubricating oil in the micro-texture to lubricate the shaft rod.

[0025] 4. The gears adopt an axial automatic compensation device with pre-tightening springs and upper and lower friction rings to keep the axial position of the gears and the dial unchanged, preventing situations such as thread dropping during the operation of the knitting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 FIG. 1 is a schematic structural diagram of a floating mechanism for a drive shaft of an anti-radial force knitting machine provided by an embodiment of the present invention;

[0028] Figure 2 FIG. 2 is a schematic structural diagram (exploded view in horizontal placement) of a floating mechanism for a drive shaft of an anti-radial force knitting machine provided by an embodiment of the present invention;

[0029] Figure 3 FIG. 3 is a schematic internal structure diagram of the shaft rod provided by an embodiment of the present invention;

[0030] Figure 4 FIG. 4 is a schematic structural diagram of the seat of the spring clamp provided by an embodiment of the present invention;

[0031] Figure 5 FIG. 5 is a schematic structural diagram of the support ring provided by an embodiment of the present invention;

[0032] Figure 6 FIG. 6 is a schematic structural diagram of the fixed sleeve provided by an embodiment of the present invention;

[0033] Figure 7 FIG. 7a is a schematic structural diagram of a herringbone gear with rectangular grooves provided by an embodiment of the present invention;

[0034] Figure 7 FIG. 7b is a schematic structural diagram of a herringbone gear with annular grooves provided by an embodiment of the present invention;

[0035] Figure 8Schematic structural diagram of the dial provided by the embodiment of the present invention.

[0036] Explanation of reference numerals:

[0037] 1. Shaft rod; 111. Oil cavity; 112. Hydrostatic oil hole; 113. Through hole; 114. Internal thread; 2. Spring clamp seat; 21. Spring groove; 3. Pre-tightening spring; 4. Support ring; 41. Semi-circular boss; 42. Rectangular boss; 5. Fixed sleeve; 51. Semi-circular groove; 52. Threaded hole; 6. Lower friction ring; 7. Herringbone gear; 71. Annular groove; 72. Rectangular groove; 8. Dial; 82. Rectangular boss; 83. Surface micro-texture; 84. Groove; 9. Nut; 10. End face bearing; 11. Sealing ring; 12. Upper friction ring; 13. Bolt. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] As Figures 1 to 8 shown, a floating mechanism for the drive shaft of an anti-radial force knitting machine

[0040] includes a shaft rod 1 fixedly arranged at the bottom on the knitting machine platform. An oil cavity 111 arranged in the same axis direction as the shaft rod 1 is provided inside the shaft rod 1. One end of the oil cavity 111 close to the knitting machine platform is used to connect to an external oil circuit;

[0041] The bottom of the shaft rod 1 is provided with an external thread for connecting to the knitting machine platform, and one end of the oil cavity 11 close to the knitting machine platform is provided with an internal thread 114 for connecting to an external oil circuit.

[0042] A plurality of hydrostatic oil holes 112 communicating with the oil cavity 111 are evenly distributed on the outer wall of the shaft rod 1. A plurality of groups are arranged along the direction parallel to the axis direction of the shaft rod 1, and the hydrostatic oil holes 112 in each group are evenly distributed in an annular array;

[0043] A boss 15 is fixedly arranged at the lower end of the shaft rod 1. A support ring 4 nested outside the shaft rod 1 and capable of sliding along the shaft rod 1 is provided above the boss 15; A pre-tightening spring 3 is pressed between the boss 15 and the support ring 4;

[0044] A spring clamp seat 2 for contacting the pre-tightening spring 3 is arranged on the boss 15. One side of the bottom of the spring clamp seat 2 is closely attached to the boss 15, and a spring groove 21 for the pre-tightening spring 3 to be embedded is opened on the other side of the spring clamp seat 2.

[0045] A fixing sleeve 5 for restricting its rotation is nested on the outer wall of the support ring 4. A number of semi-circular convex platforms 41 are evenly distributed on the outer circle of the support ring 4, and a number of semi-circular grooves 51 adapted to the semi-circular convex platforms 41 are formed in the inner circle of the fixing sleeve 5.

[0046] The fixing sleeve 5 is fixedly connected to the convex platform 15 through a bolt 13; a through hole 113 for the bolt 13 to pass through is formed in the convex platform 15, and a threaded hole 52 adapted to the bolt 13 is formed in the fixing sleeve 5.

[0047] Above the support ring 4, a lower friction ring 6, an upper friction ring 12, a herringbone gear 7 and a dial 8 which are pressed together in sequence are further nested on the shaft rod 1;

[0048] An annular groove 71 is provided at one end of the herringbone gear 7 in contact with the upper friction ring 12, and a convex platform adapted to the annular groove 71 is provided on the upper friction ring 12;

[0049] A number of rectangular grooves 72 are provided at one end of the herringbone gear 7 in contact with the dial 8, and a number of rectangular convex platforms 82 adapted to the rectangular grooves 72 are provided on the dial 8 to realize the operation of the shaft rod 1 driving the dial 8;

[0050] The surface of the inner cavity of the dial 8 is provided with a plurality of surface micro-textures 83 for storing lubricating oil and solid impurities; the surface micro-textures 83 are grooves in the shape of rectangular grooves, realizing the storage of lubricating oil and the storage of solid impurities. When the dial 8 rotates, the lubricating oil in the surface micro-textures 83 drives to lubricate the surface of the shaft rod 1, thereby improving the lubrication effect.

[0051] A nut 9 is threadedly connected to the upper end of the shaft rod 1, and the nut 9 axially fixes the entire floating mechanism by pressing the dial 8 and the pre-tightening spring 3.

[0052] A number of rectangular convex platforms 42 for closely fitting the lower friction ring 6 are provided on one side of the support ring 4 close to the lower friction ring 6. The upper friction ring 12 and the lower friction ring 6 are closely fitted, and the support ring 4 is pushed by the pre-tightening spring 3, thereby automatically axially compensating the dial 8 to keep the axial position of the dial 8 unchanged.

[0053] A sealing groove for placing a sealing ring 11 is formed in the upper friction ring 12. The sealing ring 11 is provided to ensure the overall oil film quality, improve the lubrication effect, prevent solid impurities from entering the internal structure of the moving pair of the shaft rod 1 and the dial 8, and extend the service life.

[0054] An end face bearing 10 which is in static fit with the upper end face of the dial 8 is further provided on the shaft rod 1, and a groove 84 for the end face bearing 10 to be embedded is provided on the upper end face of the dial 8.

[0055] In this structure, the external oil source enters through the bottom of the shaft rod 1 and enters the gear and the mating surface between the dial 8 and the shaft rod 1 through the static pressure oil holes 112 evenly distributed on the shaft rod 1. The surface micro-texture 83 inside the dial 8 is used to store lubricating oil and impurities, forming a pressure oil film on the contact surface of the kinematic pair to reduce the wear of the shaft rod. The static pressure oil holes 112 on one side of the shaft rod 1 further counteract the unbalanced radial force formed when the gear rotates. An axial compensation device of a pre-tightening spring 3 - upper and lower friction rings is adopted at the bottom of the gear, so as to realize the axial automatic compensation of the dial 8.

[0056] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A floating mechanism for the drive shaft of a radial force-resistant knitting machine, characterized in that It includes a shaft rod (1) with the bottom fixed on the knitting machine platform. An oil cavity (111) arranged in the same axial direction as the shaft rod (1) is provided inside the shaft rod (1). One end of the oil cavity (111) close to the knitting machine platform is used to connect to the external oil circuit; A number of static pressure oil holes (112) communicating with the oil cavity (111) are arranged on the outer wall of the shaft rod (1); A boss (15) is fixed at the lower end of the shaft rod (1). Above the boss (15), there is a support ring (4) nested around the shaft rod (1) and capable of sliding along the shaft rod (1). A pre-tightening spring (3) is pressed between the boss (15) and the support ring (4); A fixed sleeve (5) for restricting its rotation is nested on the outer wall of the support ring (4). The fixed sleeve (5) is fixedly connected to the boss (15) through a bolt (13); Above the support ring (4) on the shaft rod (1), a lower friction ring (6), an upper friction ring (12), a herringbone gear (7), and a dial (8) that are pressed together in sequence are also nested; An annular groove (71) is provided at one end of the herringbone gear (7) in contact with the upper friction ring (12). A convex platform adapted to the annular groove (71) is provided on the upper friction ring (12); A number of rectangular grooves (72) are provided at one end of the herringbone gear (7) in contact with the dial (8). A number of rectangular bosses (82) adapted to the rectangular grooves (72) are provided on the dial (8) to realize the operation of the herringbone gear (7) driving the dial (8); The surface of the inner cavity of the dial (8) is provided with a plurality of surface micro-textures (83) for storing lubricating oil and solid impurities; the upper end of the shaft rod (1) is threadedly connected with a nut (9). The nut (9) axially fixes the entire floating mechanism by pressing the dial (8) and the pre-tightening spring (3).

2. The floating mechanism of the drive shaft of an anti-radial force knitting machine according to claim 1, characterized in that, A spring seat (2) for contacting the pre-tightening spring (3) is provided on the boss (15). One side of the bottom of the spring seat (2) is closely attached to the boss (15), and a spring groove (21) for the pre-tightening spring (3) to be embedded is provided on the other side of the spring seat (2).

3. The floating mechanism of the drive shaft of an anti-radial force knitting machine according to claim 1, characterized in that, A number of semi-circular bosses (41) are evenly distributed on the outer circle of the support ring (4). A number of semi-circular grooves (51) adapted to the semi-circular bosses (41) are provided on the inner circle of the fixed sleeve (5).

4. A floating mechanism for a drive shaft of a radial force-resistant knitting machine according to claim 1, characterized in that, A number of rectangular bosses (42) for closely attaching to the lower friction ring (6) are provided on one side of the support ring (4) close to the lower friction ring (6). The upper friction ring (12) and the lower friction ring (6) are closely attached. By pushing the support ring (4) with the pre-tightening spring (3), automatic axial compensation for the dial (8) is carried out, so that the axial position of the dial (8) remains unchanged.

5. The floating mechanism of the drive shaft of an anti-radial force knitting machine according to claim 1, characterized in that, A sealing groove for placing a sealing ring (11) is provided on the upper friction ring (12). The sealing ring (11) is provided to ensure the overall oil film quality, improve the lubrication effect, prevent solid impurities from entering the internal structure of the moving pair between the shaft rod (1) and the dial (8), and extend the service life.

6. The floating mechanism of the drive shaft of a radial force-resistant knitting machine according to claim 1, characterized in that, The surface micro-texture (83) is a groove in the shape of a rectangular groove, which realizes the storage of lubricating oil and the storage of solid impurities. When the dial (8) rotates, it drives the lubricating oil in the surface micro-texture (83) to lubricate the surface of the shaft rod (1), thereby improving the lubrication effect.

7. A floating mechanism for a driving shaft of a radial force-resistant knitting machine according to claim 1, characterized in that The bottom of the shaft rod (1) is provided with an external thread for connecting the knitting machine platform, and one end of the oil cavity (111) close to the knitting machine platform is provided with an internal thread (114) for connecting the external oil circuit.

8. The floating mechanism of the drive shaft of an anti-radial force knitting machine according to claim 1, characterized in that, A through hole (113) for the bolt (13) to pass through is formed in the convex platform (15), and a threaded hole (52) adapted to the bolt (13) is formed in the fixing sleeve (5).

9. The floating mechanism of the drive shaft of an anti-radial force knitting machine according to claim 1, characterized in that, An end face bearing (10) in static fit with the upper end face of the dial (8) is further provided on the shaft rod (1), and a groove (84) for the end face bearing (10) to be embedded is provided on the upper end face of the dial (8).

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