Spindle locking device for textile machinery

Abstract

The spindle locking device for the textile machinery comprises a spindle blade and a spindle cap, a concave annular groove is formed in the outer surface of the upper portion of the spindle blade, and the spindle cap comprises an inner clamping sleeve and an outer clamping sleeve which are sleeved inside and outside. The inner clamping sleeve is hollow, the inner side wall of the inner clamping sleeve can be attached to the outer side wall of the spindle blade, a first limiting groove and a second limiting groove which are parallel to each other are formed in the outer side wall of the inner clamping sleeve at intervals, the lower side of the outer side wall of the inner clamping sleeve is arranged to be an outer stroke face, steel balls can be contained in the steel ball holes, and the hole diameter of the steel ball holes in the inner side face of the inner clamping sleeve is smaller than the diameter of the steel balls. An inner stroke face is arranged on the inner side wall of the outer clamping sleeve and attached to the outer stroke face, a fixing groove is formed in the upper portion of the inner stroke face, a limiting ring is arranged in the fixing groove and is an elastic ring, the inner end of the limiting ring protrudes out of the side wall of the inner stroke face, and the limiting ring can move and be limited relatively in the first limiting groove and the second limiting groove in an interference fit mode. A containing groove used for containing the steel balls is formed in the lower portion of the inner stroke face, and the depth of the containing groove is smaller than the diameter of the steel balls.

Description

Technical Field

[0001] The utility model relates to the field of textile machinery, in particular to a spindle locking device for textile machinery. Background Art

[0002] At present, various textile machines such as twisting machines and silk winding machines require yarn barrels or yarn tubes for transmitting or winding yarn, cotton thread and other filamentous materials, and the yarn barrels or yarn tubes are often placed on rotating spindles for work. When the yarn barrels or yarn tubes are installed on the spindles, they are often required to be fixed with a fixing device on the top of the spindle to ensure synchronous operation during the rotation of the spindle. The CN205775008U Chinese utility model patent provides a spindle for a large bobbin winder, including a dragon belt and a support plate. The structure of the spindle seat is that a shaft is formed on the lower part of the cylinder, the shaft is inserted into a preset hole on the support plate, the gasket is inserted into the shaft, the nut is screwed on the shaft and presses the gasket, and the gasket presses the lower part of the support plate... The hand-tightened nut is screwed on the upper part of the spindle shaft and pressed on the upper end of the bobbin cylinder.

[0003] In this patent, a hand-tightened nut is threadedly connected to the top of the spindle (i.e., the spindle shaft) to fix the yarn barrel or yarn tube. This method can work normally when the spindle rotation direction is the same as the thread direction. However, when the spindle rotates in the opposite direction, the hand-tightened nut is easy to loosen or even fall off due to the inertia of the high-speed rotation of the spindle, reducing production efficiency and increasing production risks. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present utility model is to provide a spindle locking device for textile machinery that is not easy to fall off and reduces production risks.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] The cam is secured to the cam face with an angular channel formed between a pair of camming members, each of which has a channel slotting mechanism that allows the cam to slide relative to the outer sleeve of the spindle when the cam is in motion. The limiting ring is an elastic ring and its inner end protrudes from the side wall of the inner stroke surface. The limiting ring can be relatively moved and limited in the first limiting groove and the second limiting groove by interference fit. A receiving groove for accommodating the steel ball is provided at the lower part of the inner stroke surface, and the depth of the receiving groove is less than the diameter of the steel ball; when the limiting ring is in the first limiting groove, the steel ball is limited in the space formed by the steel ball hole and the receiving groove, and the inner ferrule is fit-fittingly mounted on the spindle rod and can move up and down. When the outer ferrule is moved downward until the limiting ring is in the second limiting groove, the inner stroke surface squeezes the steel ball inward, and the steel ball moves inwardly in the steel ball hole. Part of the surface of the steel ball protrudes from the inner wall of the outer ferrule and enters the annular groove for clamping and fixing. The inner ferrule is fit-fittingly mounted on the spindle rod to form a lock so that the spindle cap cannot move up and down on the spindle rod.

[0007] Furthermore, the diameter of the steel ball hole on the outer side of the inner ferrule is not less than the diameter of the steel ball.

[0008] Furthermore, the inner ferrule and the outer ferrule are both made of metal, and the limiting ring is made of rubber.

[0009] Furthermore, the top of the inner ferrule is configured as a first pressing surface for convenient hand pressing, and the outer side surface of the outer ferrule is configured as a second pressing surface for convenient hand pressing.

[0010] Furthermore, the outer ferrule is partially formed as one piece except for the limiting ring, and the inner ferrule is partially formed as one piece except for the steel ball.

[0011] Furthermore, the steel ball holes and the steel balls are arranged in four groups with equal spacing.

[0012] To sum up, the beneficial effects of the present invention compared with the prior art are as follows: when the limiting ring is in the second limiting groove, part of the surface of the steel ball protrudes from the inner wall of the outer sleeve and enters the annular groove to be clamped and fixed, and the inner sleeve is fitted on the spindle rod to form a lock. Therefore, a stable locking connection is formed between the spindle cap and the spindle rod. Regardless of whether the spindle is rotated forward or reversed, the spindle cap will not loosen the fastening of the yarn barrel or yarn tube, thereby ensuring production efficiency and production safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the locked state of the embodiment;

[0014] Figure 2 This is a schematic diagram of the overall structure of the lock in the unlocked state of the embodiment;

[0015] Figure 3 Schematic diagram of the spindle rod structure;

[0016] Figure 4 Schematic diagram of the overall structure of the ingot cap;

[0017] Figure 5 This is a schematic diagram of the decomposition structure of the inner ferrule and the outer ferrule;

[0018] Figure 6 This is a cross-sectional diagram of the exploded structure of the inner ferrule and the outer ferrule;

[0019] Figure 7 It is a partially enlarged schematic diagram of the cross-sectional structure of the embodiment in the locked state;

[0020] Figure 8 It is a partially enlarged structural schematic diagram of the unlocked state cross section of the embodiment.

[0021] Reference numerals:

[0022] 1. Spindle rod; 11. Annular groove; 2. Spindle cap; 21. Inner ferrule; 211. Outer travel surface; 2111. Ball hole; 2112. Ball; 212. First limiting groove; 213. Second limiting groove; 214. First pressing surface; 22. Outer ferrule; 221. Second pressing surface; 222. Inner travel surface; 223. Fixing groove; 224. Limiting ring; 225. Receiving groove DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0024] The present invention will be further described in detail below with reference to the accompanying drawings:

[0025] The spindle is a device used to mount yarn barrels or bobbins in textile machinery. It can rotate clockwise when the motor rotates forward and counterclockwise when the motor rotates reversely. This allows the yarn to be transported from the machine to the yarn barrel or bobbin, or to be transported from the yarn barrel or bobbin to the machine in reverse. Figures 1-8 As shown, in this embodiment, the outer surface of the upper part of the spindle rod 1 is provided with an inwardly concave annular groove 11, and the annular groove 11 is used to cooperate with the spindle cap 2 to lock or unlock the yarn barrel or yarn tube sleeved on the spindle rod 1. The spindle cap 2 includes an inner sleeve 21 and an outer sleeve 22 arranged inside and outside. The inner sleeve 21 is hollow inside and the inner side wall can fit with the outer side wall of the spindle rod 1, that is, the inner sleeve 21 is sleeved on the spindle rod 1; the outer side wall of the inner sleeve 21 is provided with a first limiting groove 212 and a second limiting groove 213 parallel to each other, and the first limiting groove 212 and the second limiting groove 213 are horizontally arranged; the lower side of the outer side wall of the inner sleeve 21 is provided with an outer stroke surface 211, and a plurality of steel ball holes 2111 are circumferentially spaced apart at the upper end of the outer stroke surface 211. The plurality of steel ball holes 2111 are on the same horizontal plane, and the steel ball holes 2111 can accommodate steel balls 2112. Preferably, the steel ball holes 2111 and steel balls 2112 are provided in four groups with equal spacing; as Figure 6 As shown, the aperture of the steel ball hole 2111 on the inner side of the inner ferrule 21 (as shown at A) is smaller than the diameter of the steel ball 2112, that is, the steel ball 2112 cannot pass through the inner side of the inner ferrule 21 inwardly. Preferably, the aperture of the steel ball hole 2111 on the outer side of the inner ferrule 21 (as shown at B) is not smaller than the diameter of the steel ball 2112, that is, the steel ball 2112 can pass through the outer side of the inner ferrule 21 outwardly to facilitate installation from the outside; the inner side wall of the outer ferrule 22 is provided with an inner stroke surface 222, the inner stroke surface 222 and the outer stroke surface 211 are in contact with each other, and a fixing groove 223 is provided on the upper part of the inner stroke surface 222, and a limiting ring is provided in the fixing groove 223. 224, the limiting ring 224 is an elastic ring and the inner end protrudes from the side wall of the inner stroke surface 222. The limiting ring 224 can be relatively moved and limited in the first limiting groove 212 and the second limiting groove 213 by interference fit. Preferably, the inner ferrule 21 and the outer ferrule 22 are both made of metal, and the limiting ring 224 is made of rubber; a receiving groove 225 for accommodating the steel ball 2112 is provided at the lower part of the inner stroke surface 222, and the depth of the receiving groove 225 is less than the diameter of the steel ball 2112, which ensures that the steel ball 2112 can only partially enter the receiving groove 225 when moving outward, that is, a part of the steel ball 2112 is always in the steel ball hole 2111.

[0026] Provide further convenience for manual operation of the ingot cap 2, such as Figure 5As shown, a first pressing surface 214 is provided on the top of the inner ferrule 21 for convenient hand pressing, and a second pressing surface 221 is provided on the outer side of the outer ferrule 22 for convenient hand pressing. The first pressing surface 214 and the second pressing surface 221 can be pressed by both hands respectively, so that the inner ferrule 21 and the outer ferrule 22 produce relative movement; or the relative movement of the two can be achieved by pressing with one hand, for example, the thumb and middle finger jointly squeeze the second pressing surface 221, and the index finger presses the first pressing surface 214.

[0027] In order to improve production efficiency, the outer ferrule 22 except the limiting ring 224 can be integrally formed, and the inner ferrule 21 except the steel ball 2112 can be integrally formed.

[0028] like Figure 8 As shown, when the limiting ring 224 is in the first limiting groove 212, the steel ball 2112 is limited in the space formed by the steel ball hole 2111 and the accommodating groove 225, and the steel ball 2112 will not hinder the spindle rod 1. The inner sleeve 21 is fitted on the spindle rod 1 and can move up and down. At this time, the spindle cap 2 is in an unlocked state, and the yarn barrel or yarn tube on the spindle rod 1 can be installed and removed from the upper end; when the yarn barrel or yarn tube is installed and needs to be fixed, as shown in FIG. Figure 7 As shown, the outer sleeve 22 is moved downward until the limiting ring 224 is in the second limiting groove 213, and the inner stroke surface 222 squeezes the steel ball 2112 inward. The steel ball 2112 moves inward in the steel ball hole 2111. Part of the surface of the steel ball 2112 protrudes from the inner wall of the outer sleeve 22 and enters the annular groove 11 to be clamped and fixed. The inner sleeve 21 is fitted on the spindle rod 1 to form a lock so that the spindle cap 2 cannot move up and down on the spindle rod 1.

[0029] From the above description, it can be seen that the above embodiment achieves the following technical effects: the ingot cap and the ingot rod are locked by the steel ball clamping in the annular groove. Regardless of whether the ingot rod rotates forward or reverse, the ingot cap will not loosen or fall off due to the inertia of rotation, thereby ensuring the stability of production and the durability of the equipment. At the same time, the interference fit and positioning of the limiting ring with the first limiting groove and the second limiting groove make the relative movement of the outer ferrule and the inner ferrule simple and fast, thereby improving the efficiency of locking and unlocking. Therefore, the utility model improves production safety and improves production efficiency.

[0030] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the appended claims.

Claims

1. A spindle locking device for a textile machine, comprising a spindle rod (1) and a spindle cap (2), characterized in that: The upper outer surface of the spindle rod (1) is provided with an inwardly concave annular groove (11), and the spindle cap (2) comprises an inner ferrule (21) and an outer ferrule (22) arranged inside and outside the spindle rod; The inner ferrule (21) is hollow inside and its inner side wall can be fitted with the outer side wall of the spindle rod (1); the outer side wall of the inner ferrule (21) is provided with a first limiting groove (212) and a second limiting groove (213) which are parallel to each other; the first limiting groove (212) and the second limiting groove (213) are arranged horizontally; the lower side of the outer side wall of the inner ferrule (21) is provided with an outer stroke surface (211); a plurality of steel ball holes (2111) are provided at intervals in the circumferential direction on the upper end of the outer stroke surface (211); the plurality of steel ball holes (2111) are on the same horizontal plane; the steel ball holes (2111) can accommodate steel balls (2112); the diameter of the steel ball holes (2111) on the inner side surface of the inner ferrule (21) is smaller than the diameter of the steel balls (2112); The inner side wall of the outer sleeve (22) is provided with an inner stroke surface (222), and the inner stroke surface (222) and the outer stroke surface (211) are fitted with each other. A fixing groove (223) is provided on the upper part of the inner stroke surface (222), and a limiting ring (224) is provided in the fixing groove (223). The limiting ring (224) is an elastic ring and the inner end protrudes from the side wall of the inner stroke surface (222). The limiting ring (224) can be relatively moved and limited in the first limiting groove (212) and the second limiting groove (213) by interference fit. The lower part of the inner stroke surface (222) is provided with a receiving groove (225) for receiving the steel ball (2112), and the depth of the receiving groove (225) is less than the diameter of the steel ball (2112); When the limiting ring (224) is in the first limiting groove (212), the steel ball (2112) is limited in the space formed by the steel ball hole (2111) and the accommodating groove (225), and the inner sleeve (21) is fitted on the spindle rod (1) and can move up and down. When the outer sleeve (22) is moved downward until the limiting ring (224) is in the second limiting groove (213), the inner stroke surface (222) presses the steel ball (2112) inward, and the steel ball (2112) moves inward in the steel ball hole (2111). Part of the surface of the steel ball (2112) protrudes from the inner wall of the outer sleeve (22) and enters the annular groove (11) to be locked and fixed. The inner sleeve (21) is fitted on the spindle rod (1) to form a lock so that the spindle cap (2) cannot move up and down on the spindle rod (1).

2. A spindle locking device for textile machinery according to claim 1, characterized in that: The diameter of the steel ball hole (2111) on the outer side of the inner sleeve (21) is not less than the diameter of the steel ball (2112).

3. A spindle locking device for textile machinery according to claim 2, characterized in that: The inner ferrule (21) and the outer ferrule (22) are both made of metal, and the limiting ring (224) is made of rubber.

4. A spindle locking device for textile machinery according to any one of claims 1 to 3, characterized in that: The top of the inner ferrule (21) is configured as a first pressing surface (214) for convenient hand pressing, and the outer side surface of the outer ferrule (22) is configured as a second pressing surface (221) for convenient hand pressing.

5. A spindle locking device for textile machinery according to claim 4, characterized in that: The outer ferrule (22) is partially integrally formed except for the limiting ring (224), and the inner ferrule (21) is partially integrally formed except for the steel ball (2112).

6. A spindle locking device for textile machinery according to claim 5, characterized in that: The steel ball holes (2111) and the steel balls (2112) are arranged in four groups with equal spacing.

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