Connecting shaft device and fancy wire twisting machine

Abstract

The utility model discloses a connecting shaft device and a fancy wire twisting machine, and relates to the technical field of spinning wire twisting equipment. The connecting shaft device comprises a first shaft, a second shaft, a bearing and a locking mechanism. The first shaft has an externally threaded section. The second shaft has an internally threaded section. The external thread section is in threaded connection with the internal thread section. The bearing comprises an inner ring, a plurality of balls, an outer ring and a limiting ring frame. And the inner ring wraps the internal thread section. And the plurality of balls are embedded between the inner ring and the outer ring. And a plurality of balls are clamped by the limiting ring frame. The locking mechanism is configured to lock or loosen the outer ring. The first shaft has a first shaft shoulder connected to the male threaded section and having a larger diameter than the male threaded section. The second shaft has a second shaft shoulder connected to the female threaded section and having a larger diameter than the female threaded section. The diameter of the first shaft shoulder and the diameter of the second shaft shoulder are both larger than or equal to the outer diameter of the inner ring. A plurality of connecting shaft devices or the connecting shaft devices can be connected into a long shaft, so that the manufacturing cost and the maintenance cost are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of textile wire-pulling equipment, and in particular to a coupling device and a fancy wire-pulling machine. Background Art

[0002] In order to improve the production efficiency of fancy wire chasing machines, multiple wire chasing stations are generally set up on fancy wire chasing machines. The wire chasing stations are connected by an integrated long shaft, and multiple positions of the long shaft are supported by multiple bearings and bearing seats. Since the integrated long shaft is difficult to process, its cost is high. If the integrated long shaft is damaged at one point, it needs to be replaced as a whole, which has high maintenance costs. Utility Model Content

[0003] In view of the difficulty and high cost of processing an integrated long shaft, if one part of the integrated long shaft is damaged, it needs to be replaced as a whole, which leads to high maintenance costs. The present application proposes the following technical solutions.

[0004] A shaft coupling device comprises a first shaft, a second shaft, a bearing and a locking mechanism.

[0005] The first shaft has an external thread section, and the second shaft has an internal thread section, and the external thread section is threadedly connected to the internal thread section.

[0006] The bearing comprises an inner ring, a plurality of balls, an outer ring and a limiting ring frame. The inner ring wraps the internal thread segment. The plurality of balls are embedded between the inner ring and the outer ring. The limiting ring frame clamps the plurality of balls so that the distance between any two balls remains unchanged.

[0007] The locking mechanism is configured to lock or release the outer ring.

[0008] The first shaft has a first shoulder connected to the external thread section and having a diameter larger than the external thread section. The second shaft has a second shoulder connected to the internal thread section and having a diameter larger than the internal thread section. The diameter of the first shoulder and the diameter of the second shoulder are both greater than or equal to the outer diameter of the inner ring. The diameter of the first shoulder and the diameter of the second shoulder are both smaller than the inner diameter of the limiting ring frame.

[0009] By adopting the above technical solution, when multiple coupling devices are provided, or the coupling device includes a combination of multiple groups of first shafts, second shafts, bearings and locking mechanisms, the multiple coupling devices or the coupling device itself can be connected into a long shaft, thereby reducing manufacturing costs and maintenance costs. The coupling device can be used in a fancy chasing machine. During the production process, yarn scraps easily enter the bearings, and the bearings need to be cleaned from time to time. When cleaning the bearings, the coupling device only needs to remove the limit ring frame, and then move multiple ball bearings to one side, then the outer ring and the ball bearings can be removed, and the outer ring and the ball bearings can be cleaned. At the same time, the exposed inner ring can also be cleaned. After cleaning, the ball bearings, outer ring and limit ring frame can be reinstalled outside the inner ring.

[0010] A preferred structure of the coupling device is that the outer diameter of the internal thread section is equal to the inner diameter of the inner ring.

[0011] By adopting the above technical solution, the bearing tightly surrounds the second shaft, and the first shaft and the second shaft are not easy to shake and deviate from the rotation axis.

[0012] A preferred structure of the coupling device is that the lengths of the external thread section and the internal thread section are equal and both equal to the cross-sectional width of the inner ring, so that the first shaft shoulder and the second shaft shoulder respectively abut against the two end surfaces of the inner ring.

[0013] By adopting the above technical solution, the first shaft, the second shaft and the two end faces of the inner ring are tightly abutted, the first shaft and the second shaft will not slip along the axial direction, the positions along the axial direction are stable, and stable rotational motion can be performed.

[0014] A preferred structure of the coupling device is that the locking mechanism includes a base, an upper wooden block, a lower wooden block, a pulling member and a tightening screw. One end of the upper wooden block and one end of the lower wooden block are both inserted into the base, and there is a gap between the insertion end of the upper wooden block and the base, and there is a gap between the insertion end of the lower wooden block and the base. The bearing is installed between the upper wooden block and the lower wooden block. The pulling member connects the other end of the upper wooden block and the other end of the lower wooden block. The tightening screw is threadedly connected to the pulling member. The movement of the tightening screw relative to the pulling member can cause the tightening screw to abut against the outer ring, and cause the pulling member to deform and tighten the upper wooden block and the lower wooden block, so that the upper wooden block and the lower wooden block clamp the outer ring.

[0015] By adopting the above technical solution, the position of the tightening screw on the pulling member is adjusted by rotating the screw. The tightening screw abuts against the outer ring, and the position of the pulling member relative to the outer ring changes. The deformation of the pulling member can pull the upper wooden block and the lower wooden block to clamp or loosen the outer ring, thereby fixing the outer ring for line chasing operations, or releasing the outer ring for disassembly and cleaning operations.

[0016] A preferred structure of the coupling device is that the distance between the upper wooden block and the lower wooden block is equal to the outer diameter of the outer ring.

[0017] By adopting the above technical solution, as long as the distance between the upper wooden block and the lower wooden block changes slightly, the outer ring can be clamped or released, and the response is sensitive.

[0018] A preferred structure of the coupling device is that the pulling member includes an upper ring piece, a middle connecting piece, a lower ring piece and a nut. The two ends of the middle connecting piece connect the upper ring piece and the lower ring piece. The upper ring piece is sleeved on the upper wooden block. The lower ring piece is sleeved on the lower wooden block. The nut is fixed to the middle connecting piece. The tightening screw is threadedly connected to the nut.

[0019] By adopting the above technical solution, tightening the screw and the pulling member forms a stable threaded connection, and the pulling effect of the pulling member on the upper wooden block and the lower wooden block is reliable.

[0020] A preferred structure of the coupling device is that when the upper wooden block and the lower wooden block are in a state of clamping the outer ring, the nail cap of the tightening screw and the nut maintain a distance.

[0021] By adopting the above technical solution, the tightening screw can freely abut the outer ring, and the upper wooden block and the lower wooden block can clamp the outer ring.

[0022] A fancy wire chasing machine comprises the above-mentioned shaft coupling device.

[0023] By adopting the above technical solution, the fancy wire chasing machine has low shaft connection cost, convenient maintenance and low maintenance cost.

[0024] In summary, the coupling device and fancy chasing machine of the present application have the following beneficial effects: when there are multiple coupling devices, or the coupling device includes multiple groups of first shafts, second shafts, bearings and locking mechanisms, the multiple coupling devices or the coupling device itself can be connected into a long shaft, which reduces the manufacturing cost and maintenance cost. The coupling device can be used in a fancy chasing machine. During the production process, yarn scraps easily enter the bearings, and the bearings need to be cleaned from time to time. When cleaning the bearings, the coupling device only needs to remove the limit ring frame, and then move multiple balls to one side, then the outer ring and the balls can be removed, the outer ring and the balls can be cleaned, and the exposed inner ring can also be cleaned at the same time. After cleaning, the balls, outer ring and limit ring frame are reinstalled outside the inner ring. The fancy chasing machine using the coupling device has low coupling cost, convenient maintenance and low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The utility model is a stereoscopic diagram of a coupling device.

[0026] Figure 2 for Figure 1 An exploded view of the first shaft and the second shaft in the coupling device.

[0027] Figure 3 for Figure 1 Structural diagram of the bearing in the coupling device.

[0028] Figure 4 for Figure 1 A cross-sectional view of the connection between the first shaft, the second shaft and the bearing in the coupling device.

[0029] Figure 5 for Figure 1 Right side view of the coupling device.

[0030] Figure 6 for Figure 5 Structural diagram of the pulling member.

[0031] Figure numerals: 1. first shaft; 2. second shaft; 3. bearing; 4. locking mechanism; 11. external thread section; 21. internal thread section; 31. inner ring; 32. ball; 33. outer ring; 34. limiting ring frame; 12. first shaft shoulder; 22. second shaft shoulder; 41. base; 42. upper wooden block; 43. lower wooden block; 44. pulling member; 45. tightening screw; 441. upper ring piece; 442. middle connecting piece; 443. lower ring piece; 444. nut. DETAILED DESCRIPTION

[0032] The present application is further described below with reference to the accompanying drawings.

[0033] Embodiment 1

[0034] like Figure 1 , a coupling device, comprising a first shaft 1, a second shaft 2, a bearing 3 and a locking mechanism 4. The coupling device is installed on a fancy yarn chasing machine. The function of the coupling device in the fancy yarn twisting machine is to support the twisting and forming of the yarn. Through a specific mechanical structure and control system, the coupling device can ensure that the yarn maintains a stable shape and structure during the twisting process, and then produce a fancy yarn that meets the design requirements.

[0035] like Figure 2 The first shaft 1 has an external thread section 11. The second shaft 2 has an internal thread section 21. The external thread section 11 is threadedly connected to the internal thread section 21.

[0036] like Figure 3The bearing 3 includes an inner ring 31, a plurality of balls 32, an outer ring 33 and a limiting ring frame 34. The inner ring 31 wraps the internal thread section 21. The plurality of balls 32 are embedded between the inner ring 31 and the outer ring 33. The limiting ring frame 34 clamps the plurality of balls 32 so that the distance between any two balls 32 remains unchanged. An annular groove with a concave arc cross section is provided in the middle of the inner ring 31, and an annular groove with a concave arc cross section is provided in the middle of the outer ring 33. The two annular grooves are arranged opposite to each other to accommodate the plurality of balls 32 in the annular grooves.

[0037] The limiting ring frame 34 may include two symmetrical ring pieces, each ring piece has evenly distributed multi-point convex semicircular strips, and the two opposite convex semicircular strips are used to fit and half-wrap a ball 32, and the ring pieces are fixed by rivets or screws, so as to limit each ball 32. When disassembling, the rivets are knocked off or the screws are unscrewed, and the limiting ring frame 34 can be disassembled, and then all the balls 32 are concentrated in a small section of the annular groove, so that the outer ring 33 and the inner ring 31 can be separated from each other, and it is also possible to remove all the balls 32.

[0038] The locking mechanism 4 is configured to lock or release the outer ring 33. After locking, the first shaft 1 and the second shaft 2 can be rotated. After releasing, the bearing 3 can be disassembled to clean the yarn scraps accumulated in the bearing 3, and then the bearing 3 can be reassembled and locked.

[0039] like Figure 2 The first shaft 1 has a first shoulder 12 connected to the external thread segment 11 and having a diameter larger than that of the external thread segment 11. The second shaft 2 has a second shoulder 22 connected to the internal thread segment 21 and having a diameter larger than that of the internal thread segment 21.

[0040] like Figure 4 , the diameter of the first shoulder 12 and the diameter of the second shoulder 22 are both greater than or equal to the outer diameter of the inner ring 31. The diameter of the first shoulder 12 and the diameter of the second shoulder 22 are both smaller than the inner diameter of the limiting ring frame 34. Preferably, the outer diameters of the first shoulder 12 and the second shoulder 22 are equal.

[0041] When the bearing 3 needs to be cleaned and repaired, the outer ring 33 can move left and right, while the inner ring 31 is restricted by the first shoulder 12 and the second shoulder 22 and cannot move, so that the bearing 3 can be easily disassembled.

[0042] When a plurality of the above-mentioned coupling devices are used, or the above-mentioned coupling devices include a combination of a plurality of first shafts 1, a second shaft 2, a bearing 3 and a locking mechanism 4, the plurality of coupling devices or the coupling device itself can be connected into a long shaft, thereby reducing manufacturing costs and maintenance costs. The coupling device can be used in a fancy chasing machine. During the production process, yarn scraps easily enter the bearing 3, and the bearing 3 needs to be cleaned from time to time. When cleaning the bearing 3, the coupling device only needs to remove the limit ring frame 34, and then move the plurality of balls 32 to one side, then the outer ring 33 and the balls 32 can be removed, and the outer ring 33 and the balls 32 can be cleaned. At the same time, the exposed inner ring 31 can also be cleaned. After cleaning, the balls 32, the outer ring 33 and the limit ring frame 34 are reinstalled outside the inner ring 31.

[0043] like Figure 4 It is preferred to design the outer diameter of the internal thread section 21 to be equal to the inner diameter of the inner ring 31, so that the bearing 3 will tightly surround the second shaft 2, and the first shaft 1 and the second shaft 2 will not easily shake and deviate from the rotation axis, thereby being able to stably chase the line.

[0044] like Figure 4 Preferably, the lengths of the external thread segment 11 and the internal thread segment 21 are equal and equal to the cross-sectional width of the inner ring 31, so that the first shoulder 12 and the second shoulder 22 respectively abut against the two end surfaces of the inner ring 31, and the two end surfaces of the first shaft 1, the second shaft 2 and the inner ring 31 are tightly abutted, the first shaft 1 and the second shaft 2 will not slip in the axial direction, the positions in the axial direction are stable, and they can stably perform rotational motion.

[0045] like Figure 5 An optional structure of the locking mechanism 4 is that the locking mechanism 4 includes a base 41, an upper wooden block 42, a lower wooden block 43, a pulling member 44 and a tightening screw 45. One end of the upper wooden block 42 and one end of the lower wooden block 43 are both inserted into the base 41, and there is a gap between the insertion end of the upper wooden block 42 and the base 41, and there is a gap between the insertion end of the lower wooden block 43 and the base 41, and the gap can be 1~2mm. So that the upper wooden block 42 and the lower wooden block 43 have a certain upward and downward movement space. The bearing 3 is installed between the upper wooden block 42 and the lower wooden block 43. The pulling member 44 connects the other end of the upper wooden block 42 and the other end of the lower wooden block 43. The upper wooden block 42 and the lower wooden block 43 also have a certain degree of deformability. The tightening screw 45 is threadedly connected to the pulling member 44. The movement of the tightening screw 45 relative to the pulling member 44 can cause the tightening screw 45 to abut against the outer ring 33 and deform the pulling member 44 to tighten the upper wooden block 42 and the lower wooden block 43 so that the upper wooden block 42 and the lower wooden block 43 clamp the outer ring 33 .

[0046] Based on the locking mechanism 4 of the above structure, the tightening screw 45 can be rotated to adjust the position of the tightening screw 45 on the pulling member 44. When the tightening screw 45 abuts against the outer ring 33, the position of the pulling member 44 relative to the outer ring 33 changes. The deformation of the pulling member 44 can pull the upper wooden block 42 and the lower wooden block 43 to clamp or loosen the outer ring 33, thereby fixing the outer ring 33 for line chasing operations, or releasing the outer ring 33 to disassemble the outer ring 33 for cleaning operations.

[0047] In order to better achieve the effect of clamping the outer ring 33, the distance between the upper wooden block 42 and the lower wooden block 43 is set to be equal to the outer diameter of the outer ring 33. As long as the distance between the upper wooden block 42 and the lower wooden block 43 changes slightly, the outer ring 33 can be clamped or released, and the response is sensitive.

[0048] like Figure 6 , based on the locking mechanism 4 of the above structure, an optional structure of the pulling member 44 is that the pulling member 44 includes an upper ring piece 441, a middle connecting piece 442, a lower ring piece 443 and a nut 444. The two ends of the middle connecting piece 442 connect the upper ring piece 441 and the lower ring piece 443. The upper ring piece 441 is sleeved on the upper wooden block 42. The lower ring piece 443 is sleeved on the lower wooden block 43. The nut 444 is welded to the outer side of the middle connecting piece 442. The nail cap of the tightening screw 45 faces outward, and the tightening screw 45 is threadedly connected to the nut 444, so that the tightening screw 45 and the pulling member 44 form a stable threaded connection, and the pulling effect of the pulling member 44 on the upper wooden block 42 and the lower wooden block 43 is reliable.

[0049] It should be noted that, when the upper wooden block 42 and the lower wooden block 43 are in a state of clamping the outer ring 33, the nail cap of the tightening screw 45 and the nut 444 are designed to maintain a distance, so that the tightening screw 45 can freely abut the outer ring 33 and enable the upper wooden block 42 and the lower wooden block 43 to clamp the outer ring 33.

[0050] Embodiment 2

[0051] A fancy wire chasing machine comprises the above-mentioned coupling device, and the fancy wire chasing machine has low coupling cost, convenient maintenance and low maintenance cost.

[0052] The process of cleaning and repairing the bearing 3 for the coupling device of the above embodiment 1 and the fancy wire chasing machine of embodiment 2 is as follows: first, loosen the tightening screw 45 so that the pulling piece, the upper wooden block 42 and the lower wooden block 43 release the clamping of the outer ring 33, and the pulling piece 44 can also be removed from the upper wooden block 42 and the lower wooden block 43. Since the inner ring 31 is restricted by the first shoulder 12 and the second shoulder 22, the inner ring 31 cannot move freely, and since the diameter of the first shoulder 12 and the diameter of the second shoulder 22 are both smaller than the inner diameter of the limiting ring frame 34, that is, also smaller than the inner diameter of the outer ring 33, the limiting ring frame 34 can be freely removed, and the multiple balls 32 are moved to one side to remove the outer ring 33, and then the balls 32 are removed, so as to clean the outer ring 33, the balls 32 and the inner ring 31, remove yarn scraps, etc., and after cleaning, reassemble the three, and finally put on the pulling piece 44 and lock it by tightening the screw 45.

[0053] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, various equivalent substitutions and modifications can be made according to the above description, and these substitutions and modifications should be included in the protection scope of the present application.

Claims

1. A coupling device, characterized in that: It comprises a first shaft (1), a second shaft (2), a bearing (3) and a locking mechanism (4); The first shaft (1) has an external thread section (11); the second shaft (2) has an internal thread section (21); the external thread section (11) is threadedly connected to the internal thread section (21); The bearing (3) comprises an inner ring (31), a plurality of balls (32), an outer ring (33) and a limiting ring frame (34); the inner ring (31) wraps around the internal thread section (21); the plurality of balls (32) are embedded between the inner ring (31) and the outer ring (33); the limiting ring frame (34) clamps the plurality of balls (32) so that the distance between any two balls (32) remains unchanged; The locking mechanism (4) is configured to lock or release the outer ring (33); The first shaft (1) has a first shaft shoulder (12) connected to the external thread section (11) and having a diameter greater than that of the external thread section (11); the second shaft (2) has a second shaft shoulder (22) connected to the internal thread section (21) and having a diameter greater than that of the internal thread section (21); the diameter of the first shaft shoulder (12) and the diameter of the second shaft shoulder (22) are both greater than or equal to the outer diameter of the inner ring (31); the diameter of the first shaft shoulder (12) and the diameter of the second shaft shoulder (22) are both smaller than the inner diameter of the limiting ring frame (34).

2. The coupling device according to claim 1, characterized in that: The outer diameter of the internal thread section (21) is equal to the inner diameter of the inner ring (31).

3. The coupling device according to claim 1, characterized in that: The lengths of the external thread section (11) and the internal thread section (21) are equal and are both equal to the cross-sectional width of the inner ring (31), so that the first shaft shoulder (12) and the second shaft shoulder (22) respectively abut against the two end surfaces of the inner ring (31).

4. The shaft coupling device according to claim 1, characterized in that: The locking mechanism (4) comprises a base (41), an upper wooden block (42), a lower wooden block (43), a pulling member (44) and a tightening screw (45); One end of the upper wooden block (42) and one end of the lower wooden block (43) are both inserted into the base (41), and there is a gap between the inserted end of the upper wooden block (42) and the base (41), and there is a gap between the inserted end of the lower wooden block (43) and the base (41); the bearing (3) is installed between the upper wooden block (42) and the lower wooden block (43); the pulling member (44) connects the other end of the upper wooden block (42) and The other end of the lower wooden block (43); the tightening screw (45) is threadedly connected to the pulling member (44); the movement of the tightening screw (45) relative to the pulling member (44) can cause the tightening screw (45) to abut against the outer ring (33), and cause the pulling member (44) to deform and tighten the upper wooden block (42) and the lower wooden block (43), so that the upper wooden block (42) and the lower wooden block (43) clamp the outer ring (33).

5. The shaft coupling device according to claim 4, characterized in that: The distance between the upper wooden block (42) and the lower wooden block (43) is equal to the outer diameter of the outer ring (33).

6. The shaft coupling device according to claim 4, characterized in that: The pulling member (44) comprises an upper ring piece (441), a middle connecting piece (442), a lower ring piece (443) and a nut (444); The two ends of the middle connecting piece (442) are connected to the upper ring piece (441) and the lower ring piece (443); the upper ring piece (441) is sleeved on the upper wooden block (42); the lower ring piece (443) is sleeved on the lower wooden block (43); the nut (444) is fixed to the middle connecting piece (442); and the tightening screw (45) is threadedly connected to the nut (444).

7. The shaft coupling device according to claim 6, characterized in that: When the upper wooden block (42) and the lower wooden block (43) are in a state of clamping the outer ring (33), the nail head of the tightening screw (45) and the nut (444) maintain a distance.

8. A fancy wire chasing machine, characterized in that: The invention comprises the coupling device as described in any one of claims 1 to 7.

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