Bundy thread primary and secondary twisting integrated machine

Abstract

The present application relates to a kind of bonding line primary and secondary twisting integrated machine, including frame, primary and secondary twisting spindle, silk picking rod, overfeed roller, yarn guide mechanism and cheese stand;Primary and secondary twisting spindle is installed in the bottom of frame, including motor, main spindle, three primary twisting spindles, hot melt filament seat, silk passing rod and tensioner seat;Motor is located in the bottom of main spindle, it is connected and drives main spindle rotation;Three primary twisting spindles and hot melt filament seat are installed on main spindle respectively, and three primary twisting spindles are driven by main spindle synchronously;Silk passing rod is installed in the center of main spindle;Tensioner seat is horizontally installed in the top of silk passing rod, three silk passing wheels and a hot melt filament tension frame are installed on it, and each silk passing wheel corresponds one primary twisting spindle;Silk picking rod is located directly above primary and secondary twisting spindle;Silk picking rod, overfeed roller, yarn guide mechanism and cheese stand are sequentially installed on frame from bottom to top.The present application has many advantages such as high integration, hot melt filament can be completely wrapped, and limit firmness.

Description

Technical Field

[0001] This invention relates to a yarn production equipment, specifically a bonded yarn primary and secondary twisting integrated machine, belonging to the field of textile machinery technology. Background Technology

[0002] Bonded yarn is a composite twisted yarn formed by using hot melt yarn as the core yarn and wrapping it with three strands of twisted polyester filaments. Compared with composite twisted yarn formed by further twisting hot melt yarn and then heat setting, bonded yarn has the characteristics of high strength, wear resistance, softness, and smoothness.

[0003] In the production of existing bonded yarn, a twisting device is used to first twist the polyester filament (initial twist), and then, as needed, three initially twisted yarns are wrapped around a hot melt wire and twisted a second time (retwisting) to finally form bonded yarn.

[0004] However, the above-mentioned processing steps are completed in multiple steps, which are complex, require a variety of equipment, require a large site, and result in high production costs. In addition, the multiple processing steps also increase the wear and tear on the yarn, thus affecting the quality of the yarn.

[0005] Meanwhile, when the existing spindle performs secondary twisting on the three initial twisted yarns and the hot melt yarn, the initial twisted yarn cannot completely wrap the hot melt yarn, resulting in some of the hot melt yarn being exposed. When the hot melt yarn melts in subsequent processing, it easily sticks to other yarns, thus affecting the normal use of the yarn.

[0006] The bobbin holder is an important component of Bondi yarn twisting equipment, which winds the Bondi yarn into shape by rotating the yarn bobbin. Existing bobbin holders are shown in the applicant's earlier Chinese invention patent application No. 201120141306.0. This bobbin holder uses an elastic element and a pressure slide to limit its position. However, in actual use, when the yarn bobbin diameter is large and the weight is heavy, the elastic force of the elastic element is insufficient to limit and fix the bobbin holder, and the yarn bobbin may fall off when changing yarn or stopping operation.

[0007] Therefore, in order to solve the above-mentioned technical problems, it is indeed necessary to provide an innovative bonded thread primary and secondary twisting machine to overcome the defects in the prior art. Summary of the Invention

[0008] To address the aforementioned issues, the present invention aims to provide a highly integrated Bondi wire primary and secondary twisting machine that can completely encapsulate the hot melt wire and securely limit its movement.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a Bondi yarn initial and retwisting integrated machine, comprising a frame and initial and retwisting spindles, a take-up rod, an overfeed roller, a yarn guiding mechanism, and a bobbin frame mounted on the frame; wherein, the initial and retwisting spindles are mounted at the bottom of the frame and include a motor, a main spindle, three initial twisting spindles, a hot melt yarn holder, a yarn guide rod, and a tensioner seat; the motor is located at the bottom of the main spindle and is connected to and drives the main spindle to rotate; the three initial twisting spindles and the hot melt yarn holder are respectively mounted on the main spindle, and the three initial twisting spindles are synchronously driven by the main spindle; the yarn guide rod is vertically arranged and is mounted in the center of the main spindle; the tensioner seat is horizontally mounted on the top of the yarn guide rod, and three yarn guide rollers and a hot melt yarn tensioner are mounted on it, each yarn guide roller corresponding to one initial twisting spindle; the take-up rod is located directly above the initial and retwisting spindles; the take-up rod, the overfeed roller, the yarn guiding mechanism, and the bobbin frame are sequentially mounted on the frame from bottom to top.

[0010] The Bondi yarn initial and retwisting integrated machine of the present invention is further configured as follows: a hot melt yarn tensioner and an adjusting seat are installed on the hot melt yarn tension frame; a hot melt yarn hole is provided in the center of the adjusting seat and three initial twist yarn guide loops are evenly arranged around the hot melt yarn hole; the distance from the three initial twist yarn guide loops to the hot melt yarn hole is the same; one initial twist yarn passes through each initial twist yarn guide loop, the hot melt yarn hole and the guide rod are coaxially arranged, and a hot melt yarn passes through the hot melt yarn hole; the three initial twist yarns are wrapped around the hot melt yarn between the adjusting seat and the tensioner seat, so that the hot melt yarn is located in the middle of the three initial twist yarns.

[0011] The Bondi wire primary and secondary twisting integrated machine of the present invention is further configured such that: the hot melt wire tension frame is vertically provided with an installation groove, and the adjustment seat is installed on the installation groove and can be adjusted up and down.

[0012] The Bondi wire primary and secondary twisting integrated machine of the present invention is further configured as follows: the main spindle includes a spindle rod, a spacer disc, and a stationary disc; the spindle rod is connected to and driven by a motor; the spindle rod, the guide rod, the hot melt wire hole, and the hot melt wire tensioner are arranged coaxially; the spacer disc and the spindle rod are fixedly connected, so that the spacer disc and the spindle rod are linked; the stationary disc is pivotally connected to the spindle rod through a bearing and is located above the spacer disc.

[0013] The Bondi wire primary and secondary twisting integrated machine of the present invention is further configured such that: a pulley I is provided on the spindle rod, and a pulley II is provided at the bottom of each primary twisting spindle; the pulley I is linked to the pulley II by a synchronous belt, so that the three primary twisting spindles rotate synchronously.

[0014] The Bondi wire primary and secondary twisting integrated machine of the present invention is further configured such that: the hot melt wire tension frame is vertically provided with an installation groove, and the adjustment seat is installed on the installation groove and can be adjusted up and down.

[0015] The Bondi thread primary and secondary twisting integrated machine of the present invention is further configured as follows: the bobbin frame includes a mounting base, a bobbin frame shaft, a bobbin frame body, a limiting block, and a limiting plate; wherein, the mounting base is fixed on the machine frame; the bobbin frame shaft is supported on the mounting base; the bobbin frame body is pivotally connected to the bobbin frame shaft and can rotate relative to the bobbin frame shaft; a limiting block seat is fixed on the bobbin frame body; a fixed shaft is provided on the limiting block seat; the limiting block is pivotally connected to the fixed shaft; a wave-shaped gasket abuts against one side of the limiting block; a limiting plate seat is fixed on the machine frame, and the limiting plate is fixed to the limiting plate seat; the limiting plate can hold onto the limiting block, thereby limiting the bobbin frame body.

[0016] The Bondi thread primary and secondary twisting integrated machine of the present invention is further configured such that: the limiting plate is provided with a hook and a protrusion, the protrusion and the hook are arranged opposite to each other, and a clearance groove is provided between the protrusion and the hook.

[0017] The Bondi thread primary and secondary twisting integrated machine of the present invention is further configured such that: a slot is provided at each end of the limiting block; the hook of the limiting plate can be held in the slot; an arc surface is provided between the two slots; the limiting block can extend into the relief groove, and the hook and the protrusion can abut against the arc surface to make the limiting block rotate; The Bondi thread primary and secondary twisting integrated machine of the present invention is further configured such that: the limiting plate is provided with a guide surface, the guide surface is connected to the hook, and it can abut against the arc surface of the limiting block.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The Bondi yarn initial twisting and retwisting integrated machine of the present invention can realize the initial twisting, hot melt coating and retwisting of yarn in one step, requiring less equipment, with low production cost, and less likely to damage the yarn.

[0019] 2. The Bondi yarn initial and retwisting integrated machine of the present invention, by setting an adjustment seat, ensures that the hot melt wire is wrapped in the middle of the three initial twisted yarns, and avoids the hot melt wire being exposed during retwisting, thereby improving the yarn quality.

[0020] 3. The bobbin frame structure of the Bondi thread primary and secondary twisting integrated machine of the present invention is simple and easy to use. Through the cooperation of the limiting block and the limiting plate, the bobbin frame can be limited, and the limiting is firm, so the bobbin frame is not easy to fall off. Attached Figure Description

[0021] Figure 1 This is a perspective view of the Bondi thread primary and secondary twisting integrated machine of the present invention.

[0022] Figure 2 yes Figure 1 A three-dimensional diagram of the initial twisted spindle.

[0023] Figure 3 yes Figure 1A cross-sectional view of the initial re-twisted spindle during re-twisting.

[0024] Figure 4 yes Figure 1 A top view of the initial twisted spindle.

[0025] Figure 5 yes Figure 2 A magnified view of a portion of point A in the middle.

[0026] Figure 6 This is a schematic diagram of the spindle drive initial twisting spindle of the present invention.

[0027] Figure 7 yes Figure 1 An exploded 3D diagram of the tube frame.

[0028] Figure 8 This is a diagram showing the state of the limiting card plate of the present invention being held in place by the limiting block.

[0029] Figure 9 This is a diagram showing the state of the tube frame of the present invention when it is raised upwards.

[0030] Figure 10 yes Figure 9 A magnified view of a section at point B in the middle.

[0031] Figure 11 yes Figure 9 The diagram shows the state as the price continues to rise.

[0032] Figure 12 This is a diagram showing the state of the tube frame of the present invention when it is raised to its highest position.

[0033] Figure 13 yes Figure 12 The diagram shows the state of the tube frame when it is pressed downwards.

[0034] Figure 14 yes Figure 13 The diagram shows the state of the tube frame as it is further pressed down.

[0035] Figure 15 This is a diagram showing the cylinder frame of the present invention in a fully depressed state. Detailed Implementation

[0036] Please refer to the instruction manual appendix. Figure 1 As shown, the present invention is a Bondi yarn primary and secondary twisting integrated machine, which is assembled from several parts, including a frame 1, a primary and secondary twisting spindle 2, a take-up rod 3, an overfeed roller 4, a yarn guiding mechanism 5, and a bobbin frame 6, all mounted on the frame 1.

[0037] Please refer to the instruction manual appendix. Figure 1 To be continued Figure 6As shown, the initial twisting spindle 2 is installed at the bottom of the frame 1, and it consists of several parts, including a motor 21, a main spindle 22, three initial twisting spindles 23, a hot melt wire holder 24, a wire guide rod 25, and a tensioner seat 26. The motor 21 provides power to the entire spindle, and it is located at the bottom of the main spindle 22. It is connected to and drives the main spindle 22 to rotate.

[0038] The main spindle 22 consists of several parts, including a spindle rod 221, a wire separator disc 222, and a stationary disc 223. The spindle rod 221 is located in the center of the main spindle 22, connected to and driven by a motor 21. The wire separator disc 222 is fixedly connected to the spindle rod 221, enabling them to move together. The stationary disc 223 is pivotally connected to the spindle rod 221 via a bearing 224 and is located above the wire separator disc 222. A magnet 225 is provided at the bottom of the stationary disc 223, and a magnet (not shown) is provided on the frame 1 to attract the magnet 225, thus keeping the stationary disc 223 stationary while the spindle rod 221 rotates.

[0039] The three initial twisting spindles 23 and the hot melt wire holder 24 are respectively mounted on the main spindle 22. Specifically, the three initial twisting spindles 23 and the hot melt wire holder 24 are mounted on the stationary disk 223 of the main spindle 22 and arranged in an equal diameter around the spindle rod 221. The initial twisting spindles 23 are loaded with raw yarn 231, which can perform initial twisting on the raw yarn 231 to obtain initial twisted yarn 232. The hot melt wire holder 24 is loaded with hot melt wire bobbin 241.

[0040] Furthermore, the three initial twisting spindles 23 are synchronously driven by the main spindle 22, eliminating the need for a motor. Specifically, a pulley I226 is provided on the spindle rod 221, and a pulley II233 is provided at the bottom of each initial twisting spindle 23; the pulley I226 is linked to the pulley II233 by a synchronous belt 227, causing the three initial twisting spindles 23 to rotate synchronously, ensuring that the twist of each initial twisted yarn 232 is consistent. The upper part of the stationary disc 223 is also provided with a shielding cover 228; the shielding cover 228 shields the three initial twisting spindles 23 and the hot melt wire seat 24 to prevent the yarns from interfering with each other.

[0041] The lead screw 25 is vertically arranged and is installed in the center of the main spindle 22, and is connected to the spindle rod 221.

[0042] The tensioner seat 26 is horizontally mounted on top of the guide screw 25. Three guide rollers 261 and a hot-melt yarn tensioner 262 are mounted on the tensioner seat 26. Each guide roller 261 corresponds to a primary twist spindle 23, and the primary twisted yarn 232 is fed through the guide roller 261. A hot-melt yarn lower tensioner 271 is also mounted on the tensioner seat 26.

[0043] The hot melt wire tension frame 262 is equipped with a hot melt wire upper tensioner 272 and an adjusting seat 28. The hot melt wire 242, which is retracted from the hot melt wire bobbin 241, passes sequentially through the hot melt wire lower tensioner 271 and the hot melt wire upper tensioner 272. The two tensioners enable the hot melt wire 242 to have a large tension and be in a straight state, so as to facilitate the subsequent wrapping of the initial twisted yarn 232.

[0044] The hot melt wire tension frame 262 is vertically provided with an installation groove 263, and the adjustment seat 28 is installed on the installation groove 263, so that the adjustment seat 28 can be adjusted up and down to adjust the position of the initial twisted yarn 232 covering the hot melt wire 242.

[0045] Furthermore, the adjusting seat 28 has a hot-melt wire hole 281 in its center and three initial-twist yarn guide loops 282 evenly arranged around the hot-melt wire hole 281. The hot-melt wire 242 passes through the hot-melt wire hole 281. The spindle 221, guide rod 25, hot-melt wire hole 281, and hot-melt wire tensioner 272 are coaxially arranged, allowing the hot-melt wire 242 to enter the main spindle 22 vertically. Each initial-twist yarn guide loop 282 carries one initial-twist yarn 232.

[0046] The distances from the three initial twisted yarns 232 to the hot melt wire hole 281 are all the same, ensuring that the distance and angle between the three initial twisted yarns 232 and the hot melt wire 242 are consistent, and that the hot melt wire 242 is located in the middle of the three initial twisted yarns 232. The three initial twisted yarns 232 are wrapped around the hot melt wire 242 between the adjusting seat 28 and the tensioner seat 26.

[0047] The take-up rod 3 is located directly above the primary and secondary twist spindle 2, and it works in conjunction with the primary and secondary twist spindle 2 to retwist the yarn.

[0048] Furthermore, the take-up rod 3, overfeed roller 4, yarn guiding mechanism 5, and yarn bobbin holder 6 are sequentially installed on the frame 1 from bottom to top. The overfeed roller 4 and yarn guiding mechanism 5 are existing technologies, and therefore will not be described in detail here.

[0049] Please continue to refer to the instruction manual appendix. Figure 7 To be continued Figure 15 As shown, the cylinder frame 6 consists of several parts, including a mounting base 62, a cylinder frame shaft 63, a cylinder frame body 64, a limiting block 65, and a limiting plate 66.

[0050] The mounting base 62 is fixed to the frame 1. The cylinder frame shaft 63 is supported on the mounting base 62 and is horizontally positioned.

[0051] The bobbin holder 64 is pivotally connected to the bobbin holder shaft 63 and can rotate relative to the bobbin holder shaft 63. When the bobbin holder 64 presses down against the friction roller 8, the yarn bobbin 10 is wound into shape; when the bobbin holder 64 is raised, the yarn bobbin 10 is finished. The bobbin holder 64 is existing technology.

[0052] Furthermore, a limiting block seat 67 is fixed on the cylinder frame 64, and the limiting block seat 67 rotates in conjunction with the cylinder frame 64 around the cylinder frame shaft 63. The limiting block 65 is installed on the limiting block seat 67. Specifically, the limiting block seat 67 is provided with a fixed shaft 671; the limiting block 65 is pivotally connected to the fixed shaft 671, allowing the limiting block 65 to rotate around the fixed shaft 671. A wave-shaped washer 672 abuts against one side of the limiting block 65. By setting the wave-shaped washer 672, the limiting block 65 generates damping, preventing the limiting block 65 from rotating freely, and allowing it to rotate under external force. A slot 651 is provided at each end of the limiting block 65; an arc surface 652 is provided between the two slots 651.

[0053] A limiting plate seat 68 is fixed on the frame 1, and a limiting plate 66 is fixed to the limiting plate seat 68. The limiting plate 66 can be engaged with the limiting block 65, thereby limiting the position of the cylinder frame 64 (e.g., Figure 8 (As shown).

[0054] The limiting plate 66 is provided with a hook 661 and a protrusion 662. The protrusion 662 and the hook 661 are arranged opposite to each other, and a clearance groove 663 is provided between the protrusion 662 and the hook 661. The hook 661 of the limiting plate 66 can be engaged in the slot 651 of the limiting block 65, and the force exerted by the hook 661 on the limiting block 65 passes through the axis of the fixed shaft 671.

[0055] Furthermore, the limiting block 65 can extend into the relief groove 663, and the hook 661 and the protrusion 662 can abut against the arc surface 652, thereby allowing the limiting block 65 to rotate. The limiting plate 66 is also provided with a guide surface 664, which is connected to the hook 661 and can abut against the arc surface 652 of the limiting block 65, thereby allowing the limiting block 65 to rotate.

[0056] The cylinder frame 6, through the cooperation of the limiting block 65 and the limiting plate 66, that is, when the hook 661 is engaged in the slot 651 (as shown in the attached diagram), Figure 8 As shown, it can limit the position of the bobbin frame 64, thereby making it convenient for workers to remove the yarn bobbins 10 from the bobbin frame 64 and replace them with new yarn tubes.

[0057] When the tube frame 64 is lifted upwards (as shown in the attached diagram) Figure 9As shown), the cylinder frame 64 rotates around the cylinder frame shaft 63, and the limiting block seat 67 and the limiting block 65 are linked. At this time, the hook 661 and the slot 651 separate, and the limiting block 65 rotates into the clearance slot 663. When the cylinder frame 64 continues to rise to the highest point (as shown in the attached figure), Figure 11 and 12 As shown), the protrusion 662 of the limiting plate 66 will abut against the arc surface 652 of the limiting block 65, causing the limiting block 65 to rotate by an angle.

[0058] When the cylinder frame 64 is pressed down (as shown in the attached document) Figure 13 As shown), the limiting block 65 moves with the limiting block seat 67, and will not rotate freely due to the presence of the wave-shaped shim 672. When the cylinder frame 64 continues to press down (as shown in the attached diagram), Figure 14 and 15 As shown, the hook 661 and guide surface 664 abut against the arc surface 652 of the limiting block 65 in sequence, thereby causing the limiting block 65 to rotate until the cylinder frame 64 is pressed down to its lowest position. The pressed cylinder frame 64 is then raised and pressed down again, and the above process is reversed, so that the hook 661 can be locked in the slot 651, thus limiting the cylinder frame 64.

[0059] The working principle of the Bondi yarn initial twisting and retwisting integrated machine of the present invention is as follows: The motor 21 drives the main spindle 22 to rotate, and the spindle rod 221 of the main spindle 22 is linked to the three initial twisting spindles 23 to rotate synchronously, and the original yarn 231 is initially twisted to obtain the initial twisted yarn 232. The initial twisted yarn 232 passes through the tensioner seat 26, the guide roller 261 and the initial twisted yarn guide ring 282 in sequence. The hot melt yarn 242 passes through the hot melt yarn lower tensioner 271, the hot melt yarn upper tensioner 272 and the hot melt yarn hole 281 in sequence. Then, the three initial twisted yarns 232 are wrapped around the hot melt yarn 242. Since the hot melt yarn 242 is in the center of the three initial twisted yarns 232, and the distance and angle from the three initial twisted yarns 232 to the hot melt yarn 242 are the same, the hot melt yarn 242 can be completely wrapped by the three initial twisted yarns 232. The wrapped yarn enters the main spindle 22 and is retwisted to obtain the bonded yarn 11 by the rotation of the main spindle 22. The bonded yarn is conveyed to the yarn guiding mechanism 5 by the overfeed roller 4. The yarn guiding mechanism 5 winds the bonded yarn onto the yarn bobbin 10 of the bobbin holder 6 by reciprocating left and right.

[0060] The above-described specific embodiments are merely preferred embodiments of this invention and are not intended to limit this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A bonded yarn primary and secondary twisting integrated machine, characterized in that: The machine includes a frame and, mounted on the frame, a primary and secondary twisting spindle, a take-up rod, an overfeed roller, a yarn guiding mechanism, and a package frame. The primary and secondary twisting spindle is mounted at the bottom of the frame and includes a motor, a main spindle, three primary twisting spindles, a hot melt yarn holder, a yarn guide rod, and a tensioner seat. The motor is located at the bottom of the main spindle and connects to and drives its rotation. The three primary twisting spindles and the hot melt yarn holder are respectively mounted on the main spindle, and the three primary twisting spindles are synchronously driven by the main spindle. The yarn guide rod is vertically positioned and mounted in the center of the main spindle. The tensioner seat is horizontally mounted on top of the yarn guide rod and has three yarn guide rollers and a hot melt yarn tensioner mounted on it, each yarn guide roller corresponding to one primary twisting spindle. The take-up rod is located directly above the primary and secondary twisting spindles. The take-up rod, overfeed roller, yarn guiding mechanism, and package frame are sequentially mounted on the frame from bottom to top.

2. The Bondi thread primary and secondary twisting integrated machine as described in claim 1, characterized in that: The hot melt wire tension frame is equipped with a hot melt wire tensioner and an adjusting seat; the adjusting seat has a hot melt wire hole in the center and three initial twist yarn guides evenly arranged around the hot melt wire hole; the distance from the three initial twist yarn guides to the hot melt wire hole is the same; one initial twist yarn passes through each initial twist yarn guide; the hot melt wire hole and the guide rod are coaxially arranged, and one hot melt wire passes through the hot melt wire hole; the three initial twist yarns are wrapped around the hot melt wire between the adjusting seat and the tensioner seat, so that the hot melt wire is located in the middle of the three initial twist yarns.

3. The Bondi thread primary and secondary twisting integrated machine as described in claim 2, characterized in that: The hot melt wire tension frame is vertically provided with an installation groove, and the adjustment seat is installed on the installation groove and can be adjusted up and down.

4. The Bondi thread primary and secondary twisting integrated machine as described in claim 2, characterized in that: The main spindle includes a spindle rod, a wire separator disc, and a stationary disc; the spindle rod is connected to and driven by a motor; the spindle rod, the wire guide rod, the hot melt wire hole, and the hot melt wire tensioner are arranged coaxially; the wire separator disc is fixedly connected to the spindle rod, so that the wire separator disc and the spindle rod are linked; the stationary disc is pivotally connected to the spindle rod through a bearing and is located above the wire separator disc.

5. The Bondi thread primary and secondary twisting integrated machine as described in claim 4, characterized in that: The spindle is equipped with a pulley I, and each initial twisted spindle is equipped with a pulley II at its bottom; the pulley I is linked to the pulley II by a synchronous belt, so that the three initial twisted spindles rotate synchronously.

6. The Bondi thread primary and secondary twisting integrated machine as described in claim 2, characterized in that: The hot melt wire tension frame is vertically provided with an installation groove, and the adjustment seat is installed on the installation groove and can be adjusted up and down.

7. The Bondi thread primary and secondary twisting integrated machine as described in claim 1, characterized in that: The cylinder frame includes a mounting base, a cylinder frame shaft, a cylinder frame body, a limiting block, and a limiting plate. The mounting base is fixed to the frame. The cylinder frame shaft is supported on the mounting base. The cylinder frame body is pivotally connected to the cylinder frame shaft and can rotate relative to the cylinder frame shaft. A limiting block seat is fixed to the cylinder frame body. A fixed shaft is provided on the limiting block seat. The limiting block is pivotally connected to the fixed shaft. A corrugated gasket abuts against one side of the limiting block. A limiting plate seat is fixed to the frame, and the limiting plate is fixed to the limiting plate seat. The limiting plate can hold the limiting block, thus limiting the position of the cylinder frame body.

8. The Bondi thread primary and secondary twisting integrated machine as described in claim 7, characterized in that: The limiting plate is provided with a hook and a protrusion. The protrusion and the hook are arranged opposite to each other, and a clearance groove is provided between the protrusion and the hook.

9. The Bondi thread primary and secondary twisting integrated machine as described in claim 8, characterized in that: The limiting block has a slot at each end; the hook of the limiting plate can be held in the slot; there is an arc surface between the two slots; the limiting block can extend into the relief groove, and the hook and protrusion can abut against the arc surface to make the limiting block rotate.

10. The Bondi thread primary and secondary twisting integrated machine as described in claim 9, characterized in that: The limiting plate is also provided with a guide surface, which is connected to the hook and can abut against the arc surface of the limiting block.

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