High-speed forward and reverse multi-stage twist-increasing multifunctional flower twist hollow spindle

Abstract

The application relates to a high-speed positive and reverse multi-stage twist-increasing multifunctional flower twist hollow spindle, and belongs to the technical field of hollow spindles. The high-speed positive and reverse multi-stage twist-increasing multifunctional flower twist hollow spindle comprises a spindle rod and a spindle base, the spindle rod is rotatably arranged on the spindle base, a first conical pipe is coaxially fixed to the lower end of the spindle rod, the large-end of the first conical pipe is arranged upwards, a twist spindle is coaxially fixed to the lower end of the first conical pipe, a small synchronizing wheel is coaxially and rotatably connected to the twist spindle, and a twist mechanism is arranged at the lower end of the small synchronizing wheel; a frame body is arranged at the lower end of the spindle base, a second conical pipe is rotatably connected in the frame body, the second conical pipe is symmetrically and inversely arranged with the first conical pipe, a supporting shaft is coaxially fixed to the second conical pipe, and a large synchronizing wheel is coaxially fixed to the supporting shaft; a positive flat belt is sleeved on the outer sides of the first conical pipe and the second conical pipe, and a synchronizing belt is sleeved on the outer sides of the large synchronizing wheel and the small synchronizing wheel. The high-speed positive and reverse multi-stage twist-increasing multifunctional flower twist hollow spindle only needs to be driven by a single belt, can realize the quick conversion of single-speed hollow spindles and double-speed hollow spindles, and can adjust the positive and reverse multi-stage twist-increasing of the twist mechanism when the hollow spindle is converted into a double-speed hollow spindle.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hollow spindle, in particular to a high-speed forward and reverse multi-stage twist-increasing multifunctional fancy twist hollow spindle. BACKGROUND

[0002] Fancy yarn belongs to a unique branch of yarn, with novel and variable structure, colorful three-dimensional appearance, soft and comfortable use performance, etc. Since the 1970s, fancy yarn has entered the market exploration and development stage in the 1990s, and has not been developed until the 21st century. The rapid development of the fancy yarn market has driven the development and technological progress of the fancy twisting machine and related accessories.

[0003] The hollow spindle is an important component of the fancy twisting machine. The existing hollow spindle mainly has two types: single-speed hollow spindle and double-speed hollow spindle. The single-speed hollow spindle uses a false twister carried by a spindle rod for false twisting, but the production of many high-twist products is limited by the speed of the single spindle rod. The double-speed hollow spindle is used to solve the problem that the single-speed hollow spindle is not suitable for high-twist products, so as to meet the needs of various fancy twist production. The existing double-speed hollow spindle has upper and lower spindle rods, which are independent of each other and are driven by two belts.

[0004] For the above technical scheme, the inventor believes that the two belts are used to drive the hollow spindle to rotate, and two separate frequency conversion motors are needed to control the operation of the two belts. On the one hand, it occupies a large space and has a high cost, and on the other hand, the position and installation of the upper and lower belts have strict requirements: the distance between the two belts is relatively large, and the friction surface of the upper belt faces outward, while the friction surface of the lower belt faces inward, which leads to the need for a relatively long hollow spindle and a compact structure. In addition, during operation, the two belts need to be monitored at the same time to avoid the problem of deviation of the two belts, which has a high monitoring cost. SUMMARY

[0005] In order to reduce the number of belts, the present application provides a high-speed forward and reverse multi-stage twist-increasing multifunctional fancy twist hollow spindle.

[0006] The high-speed forward and reverse multi-stage twist-increasing multifunctional fancy twist hollow spindle provided by the present application adopts the following technical scheme:

[0007] A high-speed forward and reverse multi-stage twist-increasing multifunctional fancy twist hollow spindle, comprising a spindle rod and a spindle seat, the spindle rod is rotatably arranged in the spindle seat, the lower end of the spindle rod is coaxially fixed with a first taper pipe, the large end of the first taper pipe is arranged upward, and the small end is arranged downward, the lower end of the first taper pipe is coaxially fixed with a twisting spindle, the twisting spindle is coaxially and rotatably connected with a small synchronous wheel, and the lower end of the small synchronous wheel is provided with a twisting mechanism.

[0008] The lower end of the spool is provided with a frame body, a second taper pipe is rotationally connected in the frame body, the second taper pipe is mutually symmetrical and inverted with the first taper pipe, a supporting shaft is coaxially fixed on the second taper pipe, and a large synchronous wheel is coaxially fixed on the supporting shaft.

[0009] The outer sides of the first taper pipe and the second taper pipe are collectively sleeved with a forward flat belt, and the outer sides of the large synchronous wheel and the small synchronous wheel are collectively sleeved with a synchronous belt.

[0010] When the spindle is driven to rotate by the single strip belt, the first taper pipe is driven to rotate, the first taper pipe drives the second taper pipe to rotate through the forward flat belt, the second taper pipe drives the supporting shaft to rotate, the supporting shaft drives the large synchronous wheel to rotate, the large synchronous wheel drives the small synchronous wheel to rotate through the synchronous belt, and then the twisting mechanism is driven to rotate, so that the production of fancy twisted wires is realized. The speed of the twisting mechanism obtained through the transmission of the first taper pipe, the second taper pipe, the large synchronous wheel and the small synchronous wheel is different from the speed of the spindle, so that the hollow spindle of the application can obtain two different speeds driven by a single strip belt, and becomes a double-speed hollow spindle. The speed of the twisting mechanism can be adjusted by changing the installation height of the forward flat belt. In particular, when the forward flat belt is located on the upper end of the tapered side of the first taper pipe and the second taper pipe, the speed of the twisting mechanism reaches a maximum value. When the forward flat belt is located on the lower end of the tapered side of the first taper pipe and the second taper pipe, the speed of the twisting mechanism is a minimum value, so that the application can be applied to the production of various twist products.

[0011] Optionally, the twisting spindle is provided with a first bearing, the first bearing is located on the lower side of the small synchronous wheel, and the twisting mechanism comprises a bearing base, a mounting joint and a false twister which are connected in sequence. The bearing base is sleeved on the twisting spindle, the inner ring of the first bearing is coaxially fixed with the twisting spindle, and the outer ring is coaxially fixed with the bearing base. The mounting joint is detachably fixed with the bearing base.

[0012] Through the above technical scheme, the first bearing is installed through the bearing base, so that the small synchronous wheel and the twisting spindle are rotationally connected. The mounting joint is detachably connected with the bearing base, so that the false twister of different structural forms can be disassembled and replaced, so as to further meet the production needs of various fancy twisted wires.

[0013] Optionally, the frame body comprises a first support for detachable fixing with the spool and a second support for accommodating the second taper pipe. The first support and the second support are hingedly connected through a rotating shaft. A torsional spring is sleeved on the rotating shaft. The two ends of the torsional spring are respectively and correspondingly elastically abutted against the first support and the second support. An adjusting and locking mechanism for adjusting and locking the deflection angle of the first support and the second support is arranged on the rotating shaft.

[0014] By adopting the technical scheme, the torsional spring ensures that the forward flat belt is in a tension state, thereby realizing the transmission of the first and second taper pipes; the adjusting and locking mechanism can lock the tension state of the forward flat belt, can make the tension force of the forward flat belt be in a moderate range, avoids that the tension force of the forward flat belt is too large to cause the wear and rupture of the forward flat belt, and is beneficial to prolong the service life of the forward flat belt.

[0015] Optionally, the adjusting and locking mechanism comprises a ratchet wheel and an adjusting knob, the hinged end of the first support is arranged outside the hinged end of the second support, the ratchet wheel is sleeved on the rotating shaft and fixed with the lower end of the first support, the adjusting knob is sleeved on the rotating shaft, the rotating shaft is provided with a key groove, the adjusting knob is provided with a limiting key matched with the key groove, the upper end of the adjusting knob is provided with an adjusting groove for accommodating the ratchet wheel, and the adjusting groove is provided with a pawl matched with the ratchet wheel.

[0016] By adopting the technical scheme, the pawl limits the ratchet wheel, the ratchet wheel can only rotate in one direction relative to the pawl, the adjusting knob is rotated in the direction, the relative position of the first and second supports is adjusted, thereby the tension degree of the forward flat belt is adjusted; after the tension adjustment of the forward flat belt is completed, the torsional spring makes the ratchet wheel have a reverse rotation trend relative to the pawl, the pawl can lock the ratchet wheel, thereby the tension degree of the forward flat belt is locked, and the use is convenient.

[0017] Optionally, the rotating shaft is sleeved with an unlocking knob, the unlocking knob is arranged below the adjusting knob, the upper end of the unlocking knob is fixed with an unlocking piece, the lower end of the adjusting knob is provided with an unlocking groove and an avoiding groove, the upper ends of the unlocking groove and the avoiding groove pass through the adjusting groove, the pawl has a certain elasticity, the unlocking groove is arranged inside the pawl, the avoiding groove is arranged outside the pawl, one side of the avoiding groove close to the inner end of the pawl communicates with one side of the unlocking groove close to the inner end of the pawl, the upper end of the unlocking piece passes out of the unlocking groove and can rotate in the unlocking groove, and the unlocking piece and the ratchet wheel are arranged without interfering with each other.

[0018] By adopting the technical scheme, when it is needed to increase the tension degree of the forward flat belt, the existing tension state of the forward flat belt needs to be unlocked: the unlocking knob is twisted, the unlocking piece rotates in the unlocking groove, because the pawl has a certain elasticity, when the unlocking piece moves along the inner side of the pawl from the pawl root to the pawl head, the unlocking piece presses the pawl to make the pawl elastically deform, the avoiding groove facilitates avoiding the pawl head after deformation, the ratchet teeth on the ratchet wheel are separated from the pawl head, thereby the relative position of the ratchet wheel and the pawl is unlocked, and the operation is convenient.

[0019] Optionally, the first support is provided with a variable speed adjusting frame, the variable speed adjusting frame is arranged between the first taper pipe and the second taper pipe and is arranged outside the forward flat belt, a variable speed shifting groove is vertically arranged on the variable speed adjusting frame, a shifting block is slidably arranged in the variable speed shifting groove along the length direction of the variable speed shifting groove, an upper roller and a lower roller are arranged on the side of the shifting block close to the forward flat belt, and a limiting space for the forward flat belt to pass through is formed between the upper roller and the lower roller.

[0020] By adopting the above technical scheme, the shifting block is shifted along the variable speed shifting groove, the upper roller and the lower roller are simultaneously driven to move along the length direction of the shifting groove, the forward flat belt in the limiting space is further driven to move up and down, the relative positions of the forward flat belt on the taper outer sides of the first taper pipe and the second taper pipe are simultaneously changed when the forward flat belt moves up and down, the outer diameter of the first taper pipe decreases from top to bottom, the outer diameter of the second taper pipe increases from top to bottom, so that the transmission ratio of the transmission mechanism formed by the first taper pipe and the second taper pipe gradually decreases when the forward flat belt moves from top to bottom, the transmission of the large synchronous wheel, the small synchronous wheel and the synchronous belt is used to realize the variable speed adjustment of the twisting mechanism, the upper roller and the lower roller are arranged to limit the upper edge and the lower edge of the forward flat belt respectively, the dragging adjustment of the forward flat belt is facilitated, and even when the forward flat belt is in a transmission running state, the dragging adjustment of the forward flat belt can also be realized because the rolling friction is small when the upper roller and the lower roller contact the forward flat belt, and the dragging adjustment is convenient and fast.

[0021] Optionally, the second support is further provided with a reverse switching shaft, the reverse switching shaft is vertically arranged;

[0022] When the false twist hollow spindle performs reverse twisting, a reverse flat belt is further arranged, the reverse flat belt is used to replace the forward flat belt and is simultaneously arranged outside the reverse switching shaft and the first taper pipe, and the side wall of the second taper pipe abuts against the outside of the reverse flat belt.

[0023] The reverse first synchronous wheel is coaxially fixed on the support shaft, the reverse second synchronous wheel is coaxially fixed on the bearing base, and when the false twist hollow spindle performs reverse twisting, the synchronous belt is switched to be used for transmission between the reverse first synchronous wheel and the reverse second synchronous wheel.

[0024] By adopting the technical scheme, when reverse twisting is needed, the forward flat belt is removed and a reverse flat belt is installed, and the synchronous belt is replaced on the reverse first synchronous wheel and the reverse second synchronous wheel; compared with forward twisting, the driving direction of the dragon belt does not need to be reversed, the reverse flat belt connects the reverse switching shaft and the first taper pipe, when the spindle is driven to rotate by the single dragon belt, the first taper pipe is driven to rotate, the first taper pipe drives the reverse switching shaft to rotate through the reverse flat belt, at the same time, the reverse flat belt passes through the second taper pipe and drives the second taper pipe to rotate, the rotation direction of the second taper pipe is opposite to that of the first taper pipe, the second taper pipe drives the support shaft to rotate, the support shaft drives the reverse first synchronous wheel to rotate, the reverse first gear drives the reverse second synchronous wheel to rotate through the synchronous belt, and then the twisting mechanism is driven to rotate; the reverse rotation speed of the twisting mechanism can be adjusted by pulling up and down the reverse flat belt, so that the production requirement of reverse multi-stage twisting can be easily realized.

[0025] Optionally, the outer periphery of the first taper pipe is provided with a plurality of first steps connected in sequence, and the plurality of first steps are arranged in a tapered manner from top to bottom; the outer periphery of the second taper pipe is provided with a plurality of second steps connected in sequence, and the plurality of second steps are arranged in a tapered manner from bottom to top; the overall structure formed by the plurality of first steps is symmetrical and inverted to the overall structure formed by the plurality of second steps.

[0026] By adopting the technical scheme, the first steps are arranged on the first taper pipe, and the second steps are correspondingly arranged on the second taper pipe, the number of the first steps and the second steps can be preset according to the actual production twist requirement, when the forward flat belt or the reverse flat belt is pulled up and down, the heights formed by each first step and the corresponding second step are different, so that the multi-stage forward and reverse twisting adjustment can be realized. Compared with the taper surface with a slope, the arrangement of the first steps and the second steps is beneficial to ensuring the stability of the transmission of the forward flat belt or the reverse flat belt, and improving the adjustment accuracy of the twisting.

[0027] Optionally, the lower end of the bearing base is provided with a mounting opening, the inner side wall of the mounting opening is provided with a clamping groove, the upper end of the mounting connector is provided with an upper groove, the bottom wall of the upper groove is provided with a plurality of clamping tongues, the clamping tongues penetrate into the mounting opening, the outer side of the clamping tongues is provided with an outer protrusion matched with the clamping groove, and the upper end of the mounting connector is provided with a notch groove corresponding to the outer side of the clamping tongue and communicating with the upper groove.

[0028] By adopting the technical scheme, the mounting connector and the bearing base are fixed by clamping, when different false twisters need to be replaced, the notch groove is arranged, the clamping tongue can be extruded by extending into the notch groove, so that the clamping tongue is elastically deformed, the outer protrusion can be separated from the clamping groove, and the dismounting efficiency of the mounting connector and the bearing base is improved.

[0029] Optionally, the lower end of the second support is open, and the upper end is provided with an upper support seat, the support shaft passes through the second conical pipe and is rotatably installed in the upper support seat through at least two first upper bearings, the reverse switching shaft is rotatably installed in the upper support seat through at least two second upper bearings, and a dust cover is arranged on the upper support seat and detachably connected with the upper support seat.

[0030] By adopting the above technical scheme, the stability of the support shaft and the reverse switching shaft during rotation is ensured, and after the dust cover is covered, the lower end of the second support is open, facilitating the installation of various components in the second support; and the upper end is closed, which can effectively block dust and other falling debris.

[0031] In summary, the present application has at least one of the following beneficial technical effects:

[0032] 1. By arranging the first conical pipe, the second conical pipe, the large synchronous wheel and the small synchronous wheel, the present application is driven by only one belt, and when the spindle is driven to rotate by the single belt, the first conical pipe is driven to rotate, the first conical pipe is driven to rotate through the forward flat belt to drive the second conical pipe to rotate, the second conical pipe is driven to rotate to drive the support shaft to rotate, the support shaft is driven to rotate to drive the large synchronous wheel to rotate, the large synchronous wheel is driven to rotate through the synchronous belt to drive the small synchronous wheel to rotate, and then the twisting mechanism is driven to rotate, realizing the production of fancy twisted yarn. And after the transmission of the first conical pipe, the second conical pipe, the large synchronous wheel and the small synchronous wheel, the rotation speed of the twisting mechanism obtained by the twisting mechanism is different from the rotation speed of the spindle, thereby realizing the purpose that the single belt drive can make the hollow spindle of the present application obtain two different rotation speeds, becoming a double-speed hollow spindle; by changing the installation height of the forward flat belt, the rotation speed of the twisting mechanism can be adjusted, especially when the forward flat belt is located at the upper end of the conical side surface of the first conical pipe and the second conical pipe, the rotation speed of the twisting mechanism reaches the maximum value; when the forward flat belt is located at the lower end of the conical side surface of the first conical pipe and the second conical pipe, the rotation speed of the twisting mechanism is the minimum value, so that the present application can be applied to the production of various twist products.

[0033] 2. By adjusting the locking mechanism, the tensioning state of the forward flat belt can be locked, the tensioning force of the forward flat belt can be kept within an appropriate range, the excessive tensioning force of the forward flat belt can be avoided to cause wear and breakage of the forward flat belt, and the service life of the forward flat belt can be prolonged.

[0034] 3. By setting the variable speed adjusting frame, the shifting block, the upper roller and the lower roller, the shifting block can be shifted to simultaneously drive the upper roller and the lower roller to move along the length direction of the shifting groove, and then drive the forward flat ribbon to move up and down, and when the forward flat ribbon moves up and down, the relative positions of the outer sides of the first taper pipe and the second taper pipe also change synchronously, the outer diameter of the first taper pipe decreases from top to bottom, and the outer diameter of the second taper pipe increases from top to bottom, so that when the forward flat ribbon moves from top to bottom, the transmission ratio of the transmission mechanism composed of the first taper pipe and the second taper pipe gradually decreases, and then through the transmission of the large synchronous wheel, the small synchronous wheel and the synchronous belt, the stepless speed change of the twisting mechanism is realized; through the setting of the upper roller and the lower roller, the upper edge and the lower edge of the forward flat ribbon can be limited respectively, which is convenient for realizing the drag adjustment of the forward flat ribbon, and even when the forward flat ribbon is in a transmission running state, since the upper roller and the lower roller produce rolling friction when they contact the forward flat ribbon, the friction is small, and the drag adjustment of the forward flat ribbon can also be realized, which is convenient and fast.

[0035] 4. When reverse twisting is needed, the forward flat ribbon is removed and a reverse flat ribbon is installed, and the synchronous belt is replaced on the reverse first synchronous wheel and the reverse second synchronous wheel; compared with forward twisting, the driving direction of the dragon belt does not need to be reversed, the reverse flat ribbon connects the reverse switching shaft and the first taper pipe, when the spindle is driven to rotate by a single dragon belt, the first taper pipe is driven to rotate, the first taper pipe drives the reverse switching shaft to rotate through the reverse flat ribbon, at the same time, the reverse flat ribbon passes through the second taper pipe to drive the second taper pipe to rotate, and the rotation direction of the second taper pipe is opposite to that of the first taper pipe, the second taper pipe drives the support shaft to rotate, the support shaft drives the reverse first synchronous wheel to rotate, the reverse first gear drives the reverse second synchronous wheel to rotate through the synchronous belt, and then drives the twisting mechanism to rotate; by adjusting the up-down drag of the reverse flat ribbon, the reverse rotational speed of the twisting mechanism can be adjusted, so that the production demand of reverse multi-stage twisting can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a whole structure schematic diagram of a high-speed forward and reverse multi-stage twisting multifunctional flower twisting hollow spindle according to an embodiment of the present application.

[0037] Figure 2 is a front view showing the transmission relationship of the first taper pipe, the second taper pipe, the large synchronous wheel and the small synchronous wheel according to an embodiment of the present application.

[0038] Figure 3 is a sectional view showing the specific structure of the twisting mechanism according to an embodiment of the present application.

[0039] Figure 4 is an exploded view showing the specific structure of the twisting mechanism according to an embodiment of the present application.

[0040] Figure 5is a structural schematic diagram of the frame body in the embodiment of the present application.

[0041] Figure 6 is an exploded view of the specific structure of the adjusting and locking mechanism in the embodiment of the present application.

[0042] Figure 7 is an exploded view of the positional relationship among the pawl, the unlocking slot and the avoiding slot in the embodiment of the present application.

[0043] Figure 8 is a structural schematic diagram of one perspective of the variable-speed adjusting frame in the embodiment of the present application.

[0044] Figure 9 is a structural schematic diagram of another perspective of the variable-speed adjusting frame in the embodiment of the present application.

[0045] Figure 10 is an exploded view of the internal structure of the second frame body in the embodiment of the present application.

[0046] Figure 11 is a connection schematic diagram of the reverse flat belt, the first taper pipe, the second taper pipe and the reverse switching shaft when the reverse twisting is performed in the embodiment of the present application.

[0047] Figure 12 is an exploded view of the specific structure composition when the conversion to the single-speed hollow spindle is performed in the embodiment of the present application.

[0048] Explanation of reference signs: 1, spindle rod; 11, first taper pipe; 111, forward flat belt; 112, first step; 12, twisting spindle; 121, small synchronous wheel; 122, synchronous belt; 123, first bearing; 2, spindle base; 3, twisting mechanism; 31, bearing base; 311, mounting opening; 312, clamping groove; 313, heat dissipation hole; 32, mounting joint; 321, upper groove; 3211, limiting frame; 322, clamping tongue; 3221, outer convex part; 323, notch groove; 33, false twister; 34, reverse second synchronous wheel; 4, frame body; 41, first support; 411, pin hole; 42, second support; 421, second taper pipe; 4211, second step; 422, support shaft; 423, large synchronous wheel; 424, reverse switching shaft; 425, reverse first synchronous wheel; 426, upper support base; 427, first upper bearing; 428, second upper bearing; 429, dust cover; 43, rotating shaft; 431, torsional spring; 432, key groove; 5, adjusting and locking mechanism; 51, ratchet wheel; 52, adjusting knob; 521, limiting key; 522, adjusting groove; 523, ratchet pawl; 524, first anti-slip pattern; 525, unlocking groove; 526, avoiding groove; 6, unlocking knob; 61, unlocking piece; 62, second anti-slip pattern; 7, speed change adjusting frame; 71, speed change dial groove; 72, dial block; 721, upper roller; 722, lower roller; 723, limiting space; 724, bidirectional arrow; 73, first scale line; 74, second scale line; 8, reverse flat belt; 9, O-ring. DETAILED DESCRIPTION

[0049] The following will be described in detail below with reference to the accompanying drawings. Figures 1-12 The present application will be further described in detail.

[0050] Embodiment:

[0051] The embodiment of the present application discloses a high-speed forward and reverse multi-stage twist-increasing multifunctional fancy twist hollow spindle.

[0052] Referring to Figure 1 and Figure 2 The high-speed forward and reverse multi-stage twist-increasing multifunctional fancy twist hollow spindle comprises a spindle rod 1 and a spindle base 2, and the spindle rod 1 is rotatably arranged in the spindle base 2. The lower end of the spindle rod 1 is coaxially fixed with a first taper pipe 11, and the large end of the first taper pipe 11 is arranged upward and the small end is arranged downward, and the lower end of the first taper pipe 11 is coaxially fixed with a twisting spindle 12, and the twisting spindle 12 is coaxially and rotatably connected with a small synchronous wheel 121, and the lower end of the small synchronous wheel 121 is provided with a twisting mechanism 3;

[0053] The lower end of the spindle base 2 is detachably connected with a frame body 4, and the frame body 4 is rotatably arranged with a second taper pipe 421, and the second taper pipe 421 is symmetrically inverted with the first taper pipe 11. The lower end of the second taper pipe 421 is coaxially fixed with a support shaft 422, and the support shaft 422 is coaxially fixed with a large synchronous wheel 423;

[0054] The outer side of the first taper pipe 11 and the second taper pipe 421 is collectively sleeved with the positive flat belt 111, and the outer side of the large synchronous wheel 423 and the small synchronous wheel 121 is collectively sleeved with the synchronous belt 122.

[0055] When the hollow spindle is used, the spindle rod 1 of the hollow spindle is driven by a single belt, and when the spindle rod 1 is rotated by the single belt, the first taper pipe 11 is rotated, the first taper pipe 11 is rotated to drive the second taper pipe 421 to rotate through the positive flat belt 111, the second taper pipe 421 is rotated to drive the support shaft 422 to rotate, the support shaft 422 is rotated to drive the large synchronous wheel 423 to rotate, the large synchronous wheel 423 is rotated to drive the small synchronous wheel 121 to rotate through the synchronous belt 122, and then the twisting mechanism 3 is rotated to realize the production of fancy twisted yarn. After the transmission of the first taper pipe 11, the second taper pipe 421, the large synchronous wheel 423 and the small synchronous wheel 121, the rotation speed of the twisting mechanism 3 is different from the rotation speed of the spindle rod 1, and then the purpose of driving the hollow spindle of the application by a single belt to obtain two different rotation speeds is achieved, becoming a double-speed hollow spindle; by changing the installation height of the positive flat belt 111, the rotation speed of the twisting mechanism 3 can be adjusted, especially when the positive flat belt 111 is located on the upper end of the tapered side of the first taper pipe 11 and the second taper pipe 421, the rotation speed of the twisting mechanism 3 reaches the maximum value; when the positive flat belt 111 is located on the lower end of the tapered side of the first taper pipe 11 and the second taper pipe 421, the rotation speed of the twisting mechanism 3 is the minimum value, so that the hollow spindle can be used for the production of various twist products.

[0056] With reference to Figure 3 and Figure 4 The twisting spindle 12 is integrally formed with the spindle rod 1 and is coaxially fixed, and the first bearing 123 is installed on the twisting spindle 12 and located below the small synchronous wheel 121. The twisting mechanism 3 includes a bearing base 31, a mounting joint 32 and a false twister 33 connected in sequence, the bearing base 31 is sleeved on the twisting spindle 12, the inner ring of the first bearing 123 is coaxially fixed with the twisting spindle 12, and the outer ring is coaxially fixed with the bearing base 31. In this embodiment, two first bearings 123 are arranged in close proximity in the bearing base 31. In this way, the first bearing 123 is installed through the bearing base 31, thereby achieving the purpose of rotating connection between the small synchronous wheel 121 and the twisting spindle 12.

[0057] With reference to Figure 3 and Figure 4The mounting joint 32 is detachably fixed with the bearing base 31, and the specific implementation is as follows: the lower end of the bearing base 31 is provided with a mounting opening 311 for accommodating the first bearing 123, and a ring-shaped clamping groove 312 is arranged on the inner side wall of the mounting opening 311; the upper end of the mounting joint 32 is provided with an upper groove 321, and a plurality of clamping tongues 322 are integrally formed on the bottom wall of the upper groove 321; the clamping tongues 322 penetrate into the mounting opening 311, and the outer side of the clamping tongues 322 is integrally formed with an outer protrusion 3221 matched with the clamping groove 312. The upper end of the mounting joint 32 is provided with a notch groove 323 arranged on the outer side of the clamping tongues 322 and communicating with the upper groove 321. In the embodiment, the false twister 33 is arranged in a U shape, a T shape or a spiral shape. The mounting joint 32 is fixed with the bearing base 31 by clamping, and the notch groove 323 is arranged to facilitate the clamping tongues 322 to be extruded into the notch groove 323, so that the clamping tongues 322 are elastically deformed, and then the outer protrusion 3221 is separated from the clamping groove 312, the dismounting and mounting efficiency of the mounting joint 32 and the bearing base 31 is improved, and the false twister 33 with different structural forms can be easily dismounted and replaced, so as to further meet the production requirements of various fancy twisted threads.

[0058] With reference to Figure 2 and Figure 5 The frame body 4 comprises a first support 41 for detachable fixing with the spindle holder 2 and a second support 42 for accommodating a second taper pipe 421. In the embodiment, the first support 41 is detachably fixed with the spindle holder 2 by screw fastening. The first support 41 and the second support 42 are hinged through a rotating shaft 43, the rotating shaft 43 is sleeved with a torsional spring 431, the two ends of the torsional spring 431 are respectively elastically abutted with the first support 41 and the second support 42 one by one, and the rotating shaft 43 is provided with an adjusting and locking mechanism 5 for adjusting and locking the deflection angle of the first support 41 and the second support 42. In this way, the torsional spring 431 ensures that the forward flat belt 111 is in a tensioned state, so as to realize the transmission of the first taper pipe 11 and the second taper pipe 421; the adjusting and locking mechanism 5 can lock the tensioned state of the forward flat belt 111, so that the tensioning force of the forward flat belt 111 is within a moderate range, avoiding that the tensioning force of the forward flat belt 111 is too large to cause the wear and rupture of the forward flat belt 111, and being beneficial to prolonging the service life of the forward flat belt 111.

[0059] With reference to Figure 5 and Figure 6, the adjusting locking mechanism 5 comprises a ratchet 51 and an adjusting knob 52, the hinged end of the first support 41 is arranged outside the hinged end of the second support 42, the ratchet 51 is sleeved on the rotating shaft 43, and the upper and lower bodies of the ratchet 51 and the bottom of the first support 41 are correspondingly provided with pin holes 411 for inserting pins, so that the ratchet 51 and the lower end of the first support 41 are fixed. The adjusting knob 52 is sleeved on the rotating shaft 43, the side wall of the rotating shaft 43 is provided with a key groove 432 along the length direction of the rotating shaft 43, the adjusting knob 52 is integrally provided with a limiting key 521 matched with the key groove 432, the upper end of the adjusting knob 52 is provided with an adjusting groove 522 for accommodating the ratchet 51, and the adjusting groove 522 is provided with a ratchet pawl 523 matched with the ratchet 51. In order to facilitate the rotation of the adjusting knob 52, the first anti-skid pattern 524 is arranged on the outer circumferential surface of the adjusting knob 52. Through the limitation of the ratchet pawl 523 on the ratchet 51, the ratchet 51 can only rotate in one direction relative to the ratchet pawl 523, and rotating the adjusting knob 52 in this direction can adjust the relative position of the first support 41 and the second support 42, so as to realize the adjustment of the tension of the forward flat belt 111; when the forward flat belt 111 is adjusted to be tensioned, the torsional spring 431 makes the ratchet 51 have a reverse rotation trend relative to the ratchet pawl 523, and the ratchet pawl 523 can lock the ratchet 51, so as to realize the locking of the tension of the forward flat belt 111.

[0060] Referring to Figures 5-7 , the rotating shaft 43 is sleeved with an unlocking knob 6, the unlocking knob 6 is arranged below the adjusting knob 52, the upper end of the unlocking knob 6 is integrally provided with an unlocking piece 61, and in the embodiment, the unlocking piece 61 is an arc-shaped plate-shaped member. The lower end of the adjusting knob 52 is provided with an unlocking groove 525 and an avoiding groove 526, the upper ends of the unlocking groove 525 and the avoiding groove 526 pass through the adjusting groove 522, the ratchet pawl 523 has a certain elasticity, the unlocking groove 525 is arranged on the inner side of the ratchet pawl 523, the avoiding groove 526 is arranged on the outer side of the ratchet pawl 523, the side of the avoiding groove 526 close to the inner end of the ratchet pawl 523 is communicated with the side of the unlocking groove 525 close to the inner end of the ratchet pawl 523, the upper end of the unlocking piece 61 penetrates out of the unlocking groove 525 and can rotate in the unlocking groove 525, and the unlocking piece 61 and the ratchet 51 are arranged without interference. In order to facilitate the rotation of the unlocking knob 6, the second anti-skid pattern 62 is arranged on the outer circumferential surface of the unlocking knob 6.

[0061] When it is necessary to increase the tension of the forward flat belt 111, the existing tension state of the forward flat belt 111 needs to be unlocked: the unlocking knob 6 is twisted, so that the unlocking piece 61 rotates in the unlocking groove 525. Since the pawl 523 has a certain elasticity, when the unlocking piece 61 moves along the inner side of the pawl 523 from the pawl root to the pawl head, the unlocking piece 61 presses the pawl 523 to make the pawl 523 elastically deform. The avoidance groove 526 facilitates the avoidance of the pawl head of the deformed pawl 523, and the teeth on the ratchet wheel 51 are disengaged from the pawl head of the pawl 523, so as to unlock the relative position of the ratchet wheel 51 and the pawl 523.

[0062] With reference to Figure 1 , Figure 5 and Figures 8-9 , the first support 41 is integrally formed with a speed adjustment bracket 7, which is arranged between the first taper pipe 11 and the second taper pipe 421 and outside the forward flat belt 111. The speed adjustment bracket 7 is vertically provided with a speed shifting groove 71, and a shifting block 72 is slidingly arranged in the speed shifting groove 71 along the length direction of the speed shifting groove 71. Without external force, the shifting block 72 can hover at any height position in the speed shifting groove 71 by the static friction force generated between the shifting block 72 and the side wall of the speed shifting groove 71. The side of the shifting block 72 close to the forward flat belt 111 is rotatably provided with an upper roller 721 and a lower roller 722, and the upper roller 721 and the lower roller 722 form a limiting space 723 for the forward flat belt 111 to pass through.

[0063] In use, the shifting block 72 is shifted along the speed shifting groove 71, which can simultaneously drive the upper roller 721 and the lower roller 722 to move along the length direction of the speed shifting groove 71, and then drive the forward flat belt 111 in the limiting space 723 to move up and down. When the forward flat belt 111 moves up and down, the relative positions of the first taper pipe 11 and the second taper pipe 421 on the taper outer side of the forward flat belt 111 also change synchronously. The outer diameter of the first taper pipe 11 decreases from top to bottom, and the outer diameter of the second taper pipe 421 increases from top to bottom. Therefore, when the forward flat belt 111 moves from top to bottom, the transmission ratio of the transmission mechanism formed by the first taper pipe 11 and the second taper pipe 421 gradually decreases, and then the speed adjustment of the twisting mechanism 3 is realized through the transmission of the large synchronous wheel 423, the small synchronous wheel 121 and the synchronous belt 122. Through the arrangement of the upper roller 721 and the lower roller 722, the upper edge and the lower edge of the forward flat belt 111 can be limited respectively, which is convenient for realizing the drag adjustment of the forward flat belt 111. Even when the forward flat belt 111 is in a transmission running state, since the upper roller 721 and the lower roller 722 generate rolling friction when they contact the forward flat belt 111, the friction is small, and the drag adjustment of the forward flat belt 111 can also be realized.

[0064] With reference to Figure 5 and Figures 10-11, the second support 42 is also rotatably installed with a reverse switching shaft 424, the reverse switching shaft 424 is vertically arranged; when the false twist hollow spindle is subjected to reverse twisting, a reverse flat belt 8 is further arranged, the reverse flat belt 8 is used to replace the forward flat belt 111 and is sleeved on the outside of the reverse switching shaft 424 and the first taper pipe 11 at the same time, the side wall of the second taper pipe 421 abuts against the outside of the reverse flat belt 8; the reverse first synchronous wheel 425 is coaxially fixed on the support shaft 422, the reverse first synchronous wheel 425 is located below the large synchronous wheel 423, the reverse second synchronous wheel 34 is coaxially fixed on the bearing base 31, when the false twist hollow spindle is subjected to reverse twisting, the synchronous belt 122 is switched to be used for transmission between the reverse first synchronous wheel 425 and the reverse second synchronous wheel 34, the transmission ratio between the reverse first synchronous wheel 425 and the reverse second synchronous wheel 34 can be set according to actual production requirements.

[0065] When reverse twisting is needed, the forward flat belt 111 is removed and the reverse flat belt 8 is installed, and the synchronous belt 122 is replaced on the reverse first synchronous wheel 425 and the reverse second synchronous wheel 34; compared with forward twisting, the driving direction of the dragon belt does not need to be reversed, the reverse flat belt 8 connects the reverse switching shaft 424 and the first taper pipe 11, when the spindle rod 1 is driven to rotate by a single dragon belt, the first taper pipe 11 is driven to rotate, the first taper pipe 11 drives the reverse switching shaft 424 to rotate through the reverse flat belt 8, at the same time, the reverse flat belt 8 passes through the second taper pipe 421, drives the second taper pipe 421 to rotate, and the rotation direction of the second taper pipe 421 is opposite to that of the first taper pipe 11, the second taper pipe 421 drives the support shaft 422 to rotate, the support shaft 422 drives the reverse first synchronous wheel 425 to rotate, the reverse first gear drives the reverse second synchronous wheel 34 to rotate through the synchronous belt 122, and then drives the twisting mechanism 3 to rotate; by adjusting the up and down dragging of the reverse flat belt 8, the reverse rotation speed of the twisting mechanism 3 can be adjusted, so as to facilitate the production requirements of reverse multi-stage twisting.

[0066] Referring to Figure 3 and Figure 4 The small synchronous wheel 121 and the reverse second synchronous wheel 34 are integrally formed on the bearing base 31 and are hollow and communicated, the surface of the bearing base 31 between the small synchronous wheel 121 and the reverse second synchronous wheel 34 is provided with a heat dissipation hole 313, and the heat dissipation hole 313 is communicated with the mounting opening 311. In this way, the weight of the small synchronous wheel 121 and the reverse second synchronous wheel 34 is reduced, and the small synchronous wheel 121 and the reverse second synchronous wheel 34 rotating at high speed can be cooled, thereby prolonging the service life.

[0067] Referring to Figure 2, the outer periphery of the first taper pipe 11 is provided with a plurality of first steps 112 connected in sequence, and the plurality of first steps 112 are arranged in a tapered manner from top to bottom; the outer periphery of the second taper pipe 421 is provided with a plurality of second steps 4211 connected in sequence, and the plurality of second steps 4211 are arranged in a tapered manner from bottom to top; the overall structure formed by the plurality of first steps 112 is mutually symmetrical and inverted with the overall structure formed by the plurality of second steps 4211. By arranging the first steps 112 on the first taper pipe 11 and corresponding to arranging the second steps 4211 on the second taper pipe 421, the number of the first steps 112 and the second steps 4211 can be preset according to the actual production twist requirement. When the forward flat belt 111 or the reverse flat belt 8 is adjusted by dragging, the heights formed by each first step 112 and the corresponding second step 4211 are different, so that the forward and reverse multi-stage twist adjustment is realized. Compared with the taper surface with slope, arranging the first steps 112 and the second steps 4211 is beneficial to ensuring the stability of the transmission of the forward flat belt 111 or the reverse flat belt 8 and improving the adjustment accuracy of the twist.

[0068] With reference to Figure 8 , in order to accurately adjust the multi-stage twist of the rotation speed of the twisting mechanism 3, a plurality of first scale lines 73 and second scale lines 74 are arranged on the speed regulation rack 7, and the first scale lines 73 are arranged on one side of the speed regulation slot 71, and the second scale lines 74 are arranged on the other side of the speed regulation slot 71. The end of the dial block 72 away from the forward flat belt 111 is provided with a bidirectional arrow for pointing to the first scale lines 73 and the second scale lines 74. In this embodiment, the first scale lines 73 and the second scale lines 74 are used to represent the rotation speed ratio of the twisting mechanism 3 and the spindle 1, and the values thereof are respectively decreased from top to bottom.

[0069] With reference to Figure 10 , the lower end of the second support 42 is open, and the upper end is integrally formed with an upper support seat 426. The support shaft 422 passes through the second taper pipe 421 and is rotatably installed in the upper support seat 426 through at least two first upper bearings 427. The reverse switching shaft 424 is rotatably installed in the upper support seat 426 through at least two second upper bearings 428. A dust cover 429 is arranged on the upper end opening of the upper support seat 426, and the dust cover 429 is detachably connected with the upper support seat 426 by buckle connection. In this way, the stability of the support shaft 422 and the reverse switching shaft 424 during rotation is ensured, and after the dust cover 429 is covered, the lower end of the second support 42 is open, which is convenient for the installation of various components in the second support 42; the upper end is closed, which can effectively block dust and other falling debris.

[0070] With reference to Figure 12The hollow spindle further comprises an O-ring 9, and an annular limiting frame 3211 is arranged on the bottom wall of the upper groove 321, when the O-ring 9 is arranged in the limiting frame 3211, the outer ring of the O-ring 9 abuts against the inner side wall of the limiting frame 3211, and the inner ring abuts against the side wall of the twisting spindle 12; and there is a certain gap between the lower end of the twisting spindle 12 and the bottom wall of the upper groove 321, so as to ensure that the twisting spindle 12 and the bottom wall of the upper groove 321 do not interfere with each other when the flower twisting hollow spindle is a double-speed hollow spindle. In the embodiment, the material of the O-ring 9 is rubber.

[0071] Thus, the O-ring 9 can be used to convert the double-speed hollow spindle into a single-speed hollow spindle, specifically as follows: the forward flat belt 111 or the reverse flat belt 8 and the synchronous belt 122 are removed, the O-ring 9 is installed into the limiting frame 3211, and then the mounting connector 32 is clamped to the bearing base 31, at this time, the O-ring 9 is arranged tightly between the twisting spindle 12 and the limiting frame 3211 and a certain amount of extrusion deformation of the O-ring 9 is generated, so that the first taper pipe 11 and the twisting mechanism 3 remain relatively fixed, when the spindle rod 1 is driven to rotate by a single dragon belt, the first taper pipe 11 is driven to rotate, and when the first taper pipe 11 rotates, the twisting mechanism 3 is driven to rotate by the synchronous belt 122, so as to facilitate the conversion of the double-speed hollow spindle into a single-speed hollow spindle. If necessary, the entire frame body 4 can be directly removed, so that when the application is used for low-twist product production, the self-weight is reduced and the occupied space is reduced.

[0072] In summary, the application can realize the quick conversion of a single-speed hollow spindle and a double-speed hollow spindle, and when converted into a double-speed hollow spindle, the twisting mechanism 3 can be adjusted in multiple levels in forward and reverse directions, so as to facilitate the production of various twist products. During operation, only a single dragon belt is required to be driven by a single motor, which reduces the number of dragon belts used when converted into a double-speed hollow spindle, on the one hand, the occupied space is reduced and the cost is reduced, on the other hand, the existing driving structure of the upper and lower dragon belts is broken, which can effectively shorten the overall length and make the structure compact. In addition, only the single dragon belt needs to be monitored during operation, which reduces the monitoring cost.

[0073] The above are preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made on the basis of the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A high-speed, positive and reverse, multi-stage twist, multi-functional flower twist hollow spindle, comprising a spindle rod (1) and a spindle base (2), the spindle rod (1) rotating through the spindle base (2), characterized in that: The lower end of the spindle rod (1) is coaxially fixed with a first taper pipe (11), the large end of the first taper pipe (11) is upward, the small end is downward, the lower end of the first taper pipe (11) is coaxially fixed with a twisting spindle (12), the twisting spindle (12) is coaxially connected with a small synchronous wheel (121), the lower end of the small synchronous wheel (121) is provided with a twisting mechanism (3); The lower end of the spindle holder (2) is provided with a frame body (4), the frame body (4) is rotatably connected with a second taper pipe (421), the second taper pipe (421) is symmetrically inverted with the first taper pipe (11), the second taper pipe (421) is coaxially fixed with a supporting shaft (422), the supporting shaft (422) is coaxially fixed with a large synchronous wheel (423); The outer side of the first taper pipe (11) and the second taper pipe (421) is commonly sleeved with a positive flat belt (111), the outer side of the large synchronous wheel (423) and the small synchronous wheel (121) is commonly sleeved with a synchronous belt (122).

2. The high speed multifunctional twist hollow spindle twist yarn with positive and reverse multi-stage twist according to claim 1, characterized in that: The twisting spindle (12) is provided with a first bearing (123), the first bearing (123) is located at the lower side of the small synchronous wheel (121), the twisting mechanism (3) comprises a bearing base (31), a mounting joint (32) and a false twister (33) which are connected in sequence, the bearing base (31) is sleeved on the twisting spindle (12), the inner ring of the first bearing (123) is coaxially fixed with the twisting spindle (12), the outer ring is coaxially fixed with the bearing base (31), the mounting joint (32) is detachably fixed with the bearing base (31).

3. The high speed multifunctional twist hollow spindle twist yarn with positive and reverse multi-stage twist according to claim 2, characterized in that: The frame body (4) comprises a first support (41) for detachable fixing with the spindle holder (2) and a second support (42) for accommodating the second taper pipe (421), the first support (41) and the second support (42) are hinged through a rotating shaft (43), the rotating shaft (43) is sleeved with a torsional spring (431), the two ends of the torsional spring (431) are respectively elastically abutted with the first support (41) and the second support (42) one by one, the rotating shaft (43) is provided with an adjusting and locking mechanism (51) for adjusting and locking the deflection angle of the first support (41) and the second support (42).

4. The high speed multifunctional twist hollow spindle twist yarn with positive and reverse multi-stage twist according to claim 3, characterized in that: The adjusting and locking mechanism (51) comprises a ratchet wheel (51) and an adjusting knob (52), the hinged end of the first support (41) is located at the outer side of the hinged end of the second support (42), the ratchet wheel (51) is sleeved on the rotating shaft (43) and is fixed with the lower end of the first support (41), the adjusting knob (52) is sleeved on the rotating shaft (43), the rotating shaft (43) is provided with a key groove (432), the adjusting knob (52) is provided with a limiting key (521) which is matched with the key groove (432), the upper end of the adjusting knob (52) is provided with an adjusting groove (522) for accommodating the ratchet wheel (51), the adjusting groove (522) is provided with a pawl (523) which is matched with the ratchet wheel (51).

5. The high speed multifunctional twist hollow spindle twist yarn with positive and reverse multi-stage twist according to claim 4, characterized in that: The rotating shaft (43) is sleeved with an unlocking knob (6), the unlocking knob (6) is arranged on the lower side of the adjusting knob (52), the upper end of the unlocking knob (6) is fixed with an unlocking piece (61), the lower end of the adjusting knob (52) is provided with an unlocking groove (525) and an avoiding groove (526), the upper ends of the unlocking groove (525) and the avoiding groove (526) are penetrated through the adjusting groove (522), the pawl (523) has a certain elasticity, the unlocking groove (525) is arranged on the inner side of the pawl (523), the avoiding groove (526) is arranged on the outer side of the pawl (523), the side of the avoiding groove (526) close to the inner end of the pawl (523) is communicated with the side of the unlocking groove (525) close to the inner end of the pawl (523), the upper end of the unlocking piece (61) penetrates out of the unlocking groove (525) and can rotate in the unlocking groove (525), the unlocking piece (61) and the ratchet wheel (51) are arranged without interference.

6. The high speed multifunctional twist hollow spindle twist yarn with positive and reverse multi-stage twist according to claim 3, characterized in that: The first support (41) is provided with a variable speed adjusting frame (7), the variable speed adjusting frame (7) is arranged between the first taper pipe (11) and the second taper pipe (421) and on the outer side of the forward flat belt (111), the variable speed adjusting frame (7) is vertically provided with a variable speed shifting groove (71), the variable speed shifting groove (71) is slidably provided with a shifting block (72) along the length direction of the variable speed shifting groove (71), the side of the shifting block (72) close to the forward flat belt (111) is provided with an upper roller (721) and a lower roller (722), the upper roller (721) and the lower roller (722) form a limiting space (723) for the forward flat belt (111) to pass through.

7. The high speed multifunctional twist hollow spindle twist yarn with positive and reverse multi-stage twist according to claim 3, characterized in that: The second support (42) is rotatably connected with a reverse switching shaft (424), the reverse switching shaft (424) is vertically arranged; When the flower twist hollow spindle is reversed to twist, a reverse flat belt (8) is arranged, the reverse flat belt (8) is used for replacing the forward flat belt (111) and is sleeved on the outer sides of the reverse switching shaft (424) and the first taper pipe (11), the side wall of the second taper pipe (421) abuts against the outer side of the reverse flat belt (8); The supporting shaft (422) is coaxially fixed with a reverse first synchronous wheel (425), the bearing base (31) is coaxially fixed with a reverse second synchronous wheel (34), when the flower twist hollow spindle is reversed to twist, the synchronous belt (122) is switched to be used for the transmission between the reverse first synchronous wheel (425) and the reverse second synchronous wheel (34).

8. The high speed multifunctional twist hollow spindle twist yarn with positive and negative multi-level twist according to claim 1, characterized in that: The outer periphery of the first taper pipe (11) is provided with a plurality of first steps (112) connected in sequence, a plurality of the first steps (112) are arranged in a tapered manner from top to bottom; the outer periphery of the second taper pipe (421) is provided with a plurality of second steps (4211) connected in sequence, a plurality of the second steps (4211) are arranged in a tapered manner from bottom to top; the overall structure formed by a plurality of the first steps (112) is symmetrical and inverted with the overall structure formed by a plurality of the second steps (4211).

9. The high speed multifunctional twist hollow spindle twist yarn with positive and negative multi-stage twist according to claim 2, characterized in that: The lower end of the bearing base (31) is provided with a mounting opening (311), the inner side wall of the mounting opening (311) is provided with a clamping groove (312), the upper end of the mounting connector (32) is provided with an upper groove (321), the bottom wall of the upper groove (321) is provided with a plurality of clamping tongues (322), the clamping tongues (322) penetrate into the mounting opening (311), the outer side of the clamping tongues (322) is provided with an outer convex part (3221) matched with the clamping groove (312), the upper end of the mounting connector (32) is provided with a notch groove (323), the notch groove (323) is correspondingly arranged on the outer side of the clamping tongue (322) and communicates with the upper groove (321).

10. The high speed multifunctional twist hollow spindle twist yarn with positive and negative multi-level twist according to claim 7, characterized in that: The lower end of the second support (42) is open, and the upper end is provided with an upper support seat (426), the support shaft (422) penetrates out of the second taper pipe (421) and is rotatably installed in the upper support seat (426) through at least two first upper bearings (427), the reverse switching shaft (424) is rotatably installed in the upper support seat (426) through at least two second upper bearings (428), and the upper support seat (426) is provided with a dust cover (429), and the dust cover (429) is detachably connected with the upper support seat (426).

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