A spinning frame for the production of "cloud yarn"

Abstract

This invention discloses a spinning frame for producing "cloud yarn," comprising an outer frame. A first fixed frame is fixedly connected to the uppermost front side of the outer frame, a second fixed frame is fixedly connected to the upper front side of the outer frame, a third fixed frame is fixedly connected to the lower front side of the outer frame, and a fourth fixed frame is fixedly connected to the lower front side of the outer frame. Through the coordination of an infeed roller device, a variable speed roller device, a guiding device, a follow-up compensation device, a variable pressure output device, a pressure stabilizing device, and a monitoring device, the roving can be subjected to a set variable speed drafting roller, giving the roving a set loft and length. Furthermore, the tension of the yarn before and after the variable speed drafting roller can be maintained, ensuring the accuracy of the set values ​​when the roving is subjected to the variable speed drafting roller.

Description

Technical Field

[0001] This invention relates to a spinning machine, and more particularly to a spinning machine that can be used for the production of "cloud yarn". Background Technology

[0002] Ring spinning frame: A specialized textile equipment used in spinning production to produce fine yarn. It typically consists of four parts: feeding, drafting, twisting, and winding. It drafts and twists the preceding roving according to specific production requirements, processing it into fine yarn products of a certain specification. Fine yarn usually needs to undergo further processing such as winding, doubling, and doubling twisting to become double yarn for subsequent textile weaving processes. It can also be woven directly from single yarn, such as on circular knitting machines and woven fabrics.

[0003] "Cloud Yarn": This invention produces a fluffy yarn with irregular distribution in the regular yarn section through a spinning machine. After weaving, this special fancy yarn presents a cloud-like pattern on the fabric surface, giving consumers a light and fluffy touch and a three-dimensional mottled appearance.

[0004] To produce a loose, irregularly distributed yarn within conventional yarn segments on a spinning frame, enabling the fabric to form a subtle, cloud-like pattern after weaving, this spinning frame allows for electronically adjustable drafting speeds of the roving during the drafting roller stage. The roving is drafted at a set speed for a set duration, resulting in yarn segments with various set lengths and lofts. After further processing into double yarns using spinning frames containing these segments through winding, doubling, and twisting processes, the yarn retains its set length and loft characteristics even after subsequent weaving. Compared to existing spinning frames, this uniformly sized yarn... This characteristic is achieved by spinning yarns produced by ring spinning machines with set lengths and fillets. Based on the set length and fillet during production, the specific positions of these yarns during weaving can be arranged, allowing yarns of the set length and fillet to be woven according to a specific pattern, ultimately forming a pattern of a set shape. This set pattern is a subtle, cloud-like floral design. The set pattern can be adjusted according to the set speed and duration of the drafting roller process as the roving passes through, and the weaving positions are arranged according to a pattern. Furthermore, the woven fabric has a light and fluffy feel due to the yarn's fillet, and the woven pattern and its overall visual appearance have a three-dimensional, mottled effect.

[0005] Therefore, in order to produce yarns with settable bulk and bulk length, a spinning machine for producing "cloud yarn" needs to be developed to achieve the above objectives. Summary of the Invention

[0006] The purpose of this invention is to provide a spinning machine that can be used to produce "cloud yarn". Through the cooperation of an infeed roller device, a variable speed roller device, a guiding device, a follow-up compensation device, a variable pressure output device, a pressure stabilizing device, and a monitoring device, the machine can perform a set variable speed drafting roller on the roving, so that the roving has a set loft and loft length, and can maintain the tension of the yarn before and after the variable speed drafting roller, thus ensuring the accuracy of the set value when the roving is subjected to the variable speed drafting roller.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a spinning frame for producing "cloud yarn", comprising an outer frame, a first fixed frame fixedly connected to the uppermost front side of the outer frame, a second fixed frame fixedly connected to the upper front side of the outer frame, a third fixed frame fixedly connected to the lower front side of the outer frame, and a fourth fixed frame fixedly connected to the lower front side of the outer frame; an infeed roller device is provided at the first fixed frame, which is used to draw the roving downwards at a constant speed; a variable speed roller device is provided at the fourth fixed frame, which is used to electronically control the speed of the roller drawing the roving; a guide device is provided at both the second and third fixed frames; a follow-up compensation device is provided at both the second and third fixed frames, and both the follow-up compensation device and the guide device are divided into upper and lower parts, the follow-up compensation device being used to advance and release the excess yarn length after passing through the drafting roller of the variable speed roller device, and the guide device being used to guide the yarn during the advance and release process of the follow-up compensation device.

[0008] As a further improvement of the present invention, the feed roller device includes a feed hopper, which is fixedly connected to the upper side of the first fixed frame. Two feed shafts are rotatably connected to the first fixed frame. A first rubber roller is fixedly connected to the front feed shaft, and a first conveying roller is fixedly connected to the rear feed shaft.

[0009] As a further improvement of the present invention, the variable speed roller device includes a variable speed shaft, two variable speed shafts are rotatably connected to the fourth fixed frame, a second rubber roller is fixedly connected to the front variable speed shaft, a second conveying roller is fixedly connected to the rear variable speed shaft, a connecting frame is provided on the right side of the variable speed shaft, two sets of servo motors are fixedly connected to the connecting frame, and the output shaft of the servo motor is connected to the two variable speed shafts respectively through a coupling.

[0010] As a further improvement of the present invention, the guiding device includes an upper guide wheel, which is rotatably connected to the upper side of the second fixed frame and the third fixed frame, and a lower guide wheel is rotatably connected to the lower side of both the second fixed frame and the third fixed frame.

[0011] As a further improvement of the present invention, the follow-up compensation device includes a first movable pair, and there are two sets of the first movable pairs. The first movable pairs are respectively installed at the second fixed frame and the third fixed frame. A U-shaped frame is fixedly connected between the movable parts of the first movable pairs. A guide block is fixedly connected to the front side of each U-shaped frame. A first electric push rod is fixedly connected to the rear side of each of the second fixed frame and the third fixed frame. The pushing part of the first electric push rod is connected to the adjacent U-shaped frame.

[0012] As a further improvement of the present invention, a variable pressure yarn exit device is also included. The variable pressure yarn exit device is located below the front side of the outer frame and below the third fixed frame. The variable pressure yarn exit device is used to maintain a constant yarn exit speed after passing through the variable speed drafting roller. A mounting frame is fixedly connected to the lower front side of the outer frame. A yarn exit shaft is rotatably connected to the front side of the mounting frame. A third rubber roller is fixedly connected to the yarn exit shaft. A yarn exit hopper is fixedly connected to the upper side of the mounting frame. A pressure regulating component is provided at the mounting frame. The pressure regulating component is used to automatically adjust the traction pressure on the yarn in conjunction with the third rubber roller.

[0013] As a further improvement of the present invention, the pressure regulating assembly includes a second movable pair, which is fixedly connected to both sides of the mounting frame. A displacement frame is fixedly connected between the movable parts of the second movable pair. A displacement shaft is rotatably connected to the front side of the displacement frame. An extension frame is fixedly connected to the rear side of the mounting frame. A second electric push rod is fixedly connected to the extension frame. The pushing part of the second electric push rod is connected to the rear side of the displacement frame. A third conveying roller is fixedly connected to the displacement shaft. A universal coupling is connected to the displacement shaft. The displacement shaft is connected to the lead-out spindle of the spinning machine through the universal coupling.

[0014] As a further improvement of the present invention, a pressure stabilizing device is also included. The pressure stabilizing device is located in the middle of the front side of the outer frame. The pressure stabilizing device is used to stabilize the friction and pressure at the point where the roving enters the variable speed roller device. A frame is fixedly connected to the middle of the front side of the outer frame. A pressure stabilizing plate is fixedly connected to the inner side of the front side wall of the frame. A third moving pair is fixedly connected to both sides of the middle of the frame. A push plate is fixedly connected between the moving parts of the third moving pair. Pressure stabilizing wheels are rotatably connected to the opposing surfaces of the push plate and the pressure stabilizing plate. A third electric push rod is fixedly connected to the rear side of the frame. The moving part of the third electric push rod is connected to the moving part of the third moving pair.

[0015] As a further improvement of the present invention, a monitoring device is also included. The monitoring device is respectively disposed on the front side of the guide block. The monitoring device is used to monitor the tension state of the yarn when it is subjected to the drafting roller of the variable speed roller device and after the drafting roller. A pressure sensor is fixedly connected to the front side of each guide block, and an arc-shaped guide frame is fixedly connected to the front side of each pressure sensor.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention employs a constant-speed feed roller and a variable-speed roller, enabling the variable-speed roller to draw the roving at a set speed and duration. This allows the roving to have settable loft and length properties, forming yarn segments with multiple set lengths and lofts. During subsequent weaving, the weaving positions can be arranged in a regular pattern, and the woven fabric has a light and fluffy feel due to the yarn's loft. The woven patterns and designs, as well as the overall visual effect, have a three-dimensional and mottled appearance, breaking away from the uniformity of conventional yarns and thus forming a new type of yarn with unique aesthetics.

[0018] 2. This invention employs a follow-up compensation device that automatically adjusts the yarn tension in conjunction with the variable speed roller device. This allows the yarn to maintain its own tension before and after passing through the variable speed drafting roller, avoiding the difficulty in setting the variable speed drafting value due to inconsistent yarn tension caused by speed changes, and ensuring the yarn quality during variable speed drafting.

[0019] 3. By employing an adjustable spacing between the pressure stabilizing plate and the push plate of the pressure stabilizing device, the present invention enables the push plate and the pressure stabilizing plate to maintain the gripping force on the roving through the pressure stabilizing wheel when the variable speed roller device is drawing roving, and concentrates the speed change point of the roving when it is drawn, thereby reducing the overall stress on the roving when it is drawn. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.

[0022] Figure 3 This is a schematic diagram of the third three-dimensional structure of the present invention.

[0023] Figure 4 This is a three-dimensional structural diagram of the feed roller device of the present invention.

[0024] Figure 5 This is a first three-dimensional structural diagram of the guiding device part of the present invention.

[0025] Figure 6 This is a three-dimensional structural diagram of the variable speed roller device of the present invention.

[0026] Figure 7 This is a schematic diagram of a first partial three-dimensional structure of the transformer output device of the present invention.

[0027] Figure 8 This is a schematic diagram of a second partial three-dimensional structure of the transformer output device of the present invention.

[0028] Figure 9 This is a schematic diagram of a second three-dimensional structure of the guiding device part of the present invention.

[0029] Figure 10 This is a schematic diagram of the third three-dimensional structure of the guiding device part of the present invention.

[0030] Figure 11 This is a partial three-dimensional structural diagram of the follow-up compensation device of the present invention.

[0031] Figure 12 This is a first three-dimensional structural diagram of the monitoring device part of the present invention.

[0032] Figure 13 This is a second three-dimensional structural diagram of the monitoring device part of the present invention.

[0033] Figure 14 This is a three-dimensional structural diagram of the voltage stabilizing device part of the present invention.

[0034] In the diagram: 1. External frame; 2. First fixed frame; 3. Second fixed frame; 4. Third fixed frame; 5. Fourth fixed frame; 6. Infeed roller device; 7. Variable speed roller device; 8. Guide device; 9. Follow-up compensation device; 61. Infeed hopper; 62. Infeed shaft; 63. First rubber roller; 64. First conveying roller; 71. Variable speed shaft; 72. Second rubber roller; 73. Second conveying roller; 74. Connecting frame; 75. Servo motor; 81. Upper guide wheel; 82. Lower guide wheel; 91. First moving pair; 92. U-shaped frame; 93. Guide block; 94. First electric push rod; 10. Variable pressure output. Line assembly, 101. Mounting frame, 102. Outgoing shaft, 103. Third rubber roller, 104. Outgoing hopper, 11. Pressure regulating assembly, 111. Second moving pair, 112. Displacement frame, 113. Extension frame, 114. Second electric push rod, 115. Displacement shaft, 116. Third conveying roller, 117. Universal coupling, 12. Pressure stabilizing device, 121. Frame, 122. Pressure stabilizing plate, 123. Third moving pair, 124. Push plate, 125. Pressure stabilizing wheel, 126. Third electric push rod, 13. Monitoring device, 131. Pressure sensor, 132. Arc-shaped guide frame. Detailed Implementation

[0035] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0036] Example 1

[0037] like Figures 1-3 As shown, a spinning machine for producing "cloud yarn" includes an outer frame 1, a first fixed frame 2, a second fixed frame 3, a third fixed frame 4, a fourth fixed frame 5, an infeed roller device 6, a speed-changing roller device 7, a guide device 8, and a follow-up compensation device 9. The outer frame 1 has an I-beam frame structure 121. The first fixed frame 2 is fixedly connected to the uppermost front side of the outer frame 1. The second fixed frame 3 is fixedly connected to the upper front side of the outer frame 1. The third fixed frame 4 is fixedly connected to the lower front side of the outer frame 1. The fourth fixed frame 5 is fixedly connected to the lower front side of the outer frame 1. The infeed roller device 6 is provided at the first fixed frame 2. The infeed roller device 6 is used to traction the roving downwards at a constant speed so that the output of the roving bobbin is stable and not affected by speed changes. The speed-changing roller device 7 is provided at the fourth fixed frame 5. Device 7 is used for electrically controlling the speed of the drafting roller to create irregularly distributed, fluffy yarn within a set yarn segment. Guide devices 8 and follow-up compensation devices 9 are provided at both the second fixed frame 3 and the third fixed frame 4. Both the follow-up compensation device 9 and the guide device 8 are divided into upper and lower parts. The upper guide device 8 and upper follow-up compensation device 9 are installed at the second fixed frame 3, and the lower guide device 8 and lower follow-up compensation device 9 are installed at the third fixed frame 4. The follow-up compensation device 9 is used to advance and release the excess yarn length after passing through the drafting roller of the variable speed roller device 7, ensuring the tension of the yarn after passing through the drafting roller of the variable speed roller device 7. The guide device 8 is used to guide the yarn during the advance and release process of the follow-up compensation device 9.

[0038] To produce a fluffy yarn with irregular distribution within the regular yarn segments in the spinning machine stage, so that after weaving, this special yarn can form a subtle cloud-like pattern in the fabric; the aforementioned yarn can be produced using a spinning machine suitable for "cloud yarn" production; this spinning machine suitable for "cloud yarn" production can be mounted on the main frame of the spinning machine via the external frame 1, and connected to the drive motor and computer for setting the control program, and then the roving is passed through the infeed roller device 6, the upper guide device 8, and the upper follow-up compensation device 9. The roving is then connected to the winding machine via a variable speed roller device 7, a lower guide device 8, and a lower follower compensation device 9. This completes the arrangement of the roving on the spinning machine suitable for producing "cloud yarn." The machine can then be started for spinning operations. At this time, the feed roller device 6, the variable speed roller device 7, and the winding machine will begin to rotate. The feed roller device 6 will pull the roving downwards from the roving bobbin at a constant speed. This constant pulling speed ensures that the roving bobbin releases the roving at a constant speed, preventing the variable speed roller device 7 from... The variable speed drafting roller process alters the release speed of the roving bobbin, leading to uneven roving tension and breakage. The variable speed roller device 7 executes speed changes according to a pre-set program, altering the relative speed of the yarn passing through its drafting roller. This allows the variable speed roller device 7 to perform variable speed drafting of the roving, drafting it into a yarn with a set loft. By controlling the running time of the variable speed roller device 7 at this speed, the roving can be drafted into a yarn of a set length. Controlling the variable speed roller device 7 to run at a relatively slow speed allows for better control of the yarn's length. The drafting roller can draw the roving into a fluffier yarn. By controlling the variable speed roller device 7 to run relatively fast, the drafting roller can draw the roving into a finer and longer yarn. When the variable speed roller device 7 is running relatively fast, the yarn speed after passing through the variable speed roller device 7 increases, the yarn lengthens, and the tension decreases. At this time, the lower follower compensation device 9 will move according to the program, so that the extended yarn is compensated by the lower follower compensation device 9, so that the extended yarn maintains tension and avoids the yarn from getting tangled on other mechanical mechanisms during operation.When the variable speed roller device 7 operates at a relatively slow speed, the yarn speed decreases after passing through it, the yarn shortens, and the tension increases. At this time, the lower follower compensation device 9 will move according to the program, releasing the excess space of the shortened yarn, reducing the tension of the shortened yarn, and preventing yarn breakage. Meanwhile, the roving feed speed of the feed roller device 6 is constant. The roving between the feed roller device 6 and the variable speed roller device 7 will gradually gather at this point due to the relatively slow speed of the drafting roller. That is, the roving at this position will gather because it will not receive sufficient speed from the drafting roller, resulting in reduced tension. At this time, the upper follower compensation device 9 will operate according to the program, compensating for excess space in the roving at that position to maintain its tension. Similarly, if the variable speed roller device 7 increases its drafting roller speed, the upper follower compensation device 9 will release excess space in the roving at that position to maintain its tension. In this way, the roving can pass through the drafting roller at a set speed and running time, enabling the roving to produce yarns with various set lofts and lengths, thus producing fancy yarns. Furthermore, the production process can maintain stable yarn feeding, improving the quality of such fancy yarns.

[0039] By employing a constant-speed feed roller and a variable-speed roller, the variable-speed roller can be used to draft the roving at a set speed and duration. This allows the roving to have settable loft and length properties, forming yarn segments with various set lengths and lofts. During subsequent weaving, the weaving positions can be arranged in a regular pattern, and the woven fabric has a light and fluffy feel due to the yarn's loft. The woven patterns and designs, as well as the overall visual effect, have a three-dimensional and mottled appearance, breaking away from the uniformity of conventional yarns and thus forming a new type of yarn with a unique aesthetic.

[0040] Example 2

[0041] like Figure 4 As shown, the yarn feeding roller device 6 includes a yarn feeding hopper 61, a yarn feeding shaft 62, a first rubber roller 63, and a first conveying roller 64. The yarn feeding hopper 61 is fixedly connected to the upper side of the first fixed frame 2. The yarn feeding hopper 61 is trumpet-shaped and has a rounded inner structure to protect the roving from being cut by sharp edges when it passes through, and to protect the adhesion of the roving fibers. Two yarn feeding shafts 62 are rotatably connected to the first fixed frame 2. The yarn feeding shafts 62 are both horizontally placed in the left-right direction and are parallel to each other. The yarn feeding shafts 62 are D-shaped shafts and are used to connect to the main shaft of the spinning machine. The first rubber roller 63 is fixedly connected to the front of the yarn feeding shaft 62, and the first conveying roller 64 is fixedly connected to the rear of the yarn feeding shaft 62.

[0042] The roving passes through the roving bobbin 61 and between the first rubber roller 63 and the first conveying roller 64. The roving shaft 62 is then connected to the spinning frame's main shaft via its D-shaped shaft structure and coupling. After the machine is started, the spinning frame's main shaft will drive the roving shaft 62 to rotate relative to each other, causing the first rubber roller 63 and the second conveying roller 73 to transfer the roving downwards.

[0043] like Figure 6 As shown, the variable speed roller device 7 includes a variable speed shaft 71, a second rubber roller 72, a second conveying roller 73, a connecting frame 74, and a servo motor 75. Two variable speed shafts 71 are rotatably connected to the fourth fixed frame 5. The variable speed shafts 71 are both horizontally arranged in the left-right direction and are parallel to each other. The feed shaft 62 is a D-shaped shaft. The second rubber roller 72 is fixedly connected to the front variable speed shaft 71, and the second conveying roller 73 is fixedly connected to the rear variable speed shaft 71. A connecting frame 74 is provided on the right side of the variable speed shaft 71. Two sets of servo motors 75 are fixedly connected to the connecting frame 74. The servo motors 75 are controlled by a program. The output shafts of the servo motors 75 are connected to the two variable speed shafts 71 respectively through couplings, so that the speed of the variable speed shafts 71 can be changed by the control of the servo motors 75.

[0044] The roving is drafted by the second rubber roller 72 and the second conveyor roller 73. Changing the output speed of the servo motor 75 also changes the speed of the second rubber roller 72 and the second conveyor roller 73. If the output speed of the servo motor 75 is reduced, the second rubber roller 72 and the second conveyor roller 73 will reduce the drafting speed of the roving, making the roving more fluffy. If the output speed of the servo motor 75 is increased, the second rubber roller 72 and the second conveyor roller 73 will increase the drafting speed of the roving, making the roving more compact. By controlling the duration of the change in speed of the servo motor 75, the drafting state of the roving will also be maintained at a certain length. In this way, the roving can be drafted into a controllable and settable state. According to the set value of the servo motor 75, the yarn can be arranged to form cloud-like yarn.

[0045] like Figure 5 , Figures 9-12 As shown, the guiding device 8 includes an upper guide wheel 81 and a lower guide wheel 82. The upper guide wheel 81 is rotatably connected to the upper side of the second fixed frame 3 and the third fixed frame 4, respectively. The lower guide wheel 82 is rotatably connected to the lower side of the second fixed frame 3 and the third fixed frame 4. Each set of upper guide wheels 81 and lower guide wheels 82 is used to guide the yarn when the follow-up compensation device 9 is running.

[0046] The upper guide wheel 81 and the lower guide wheel 82 can guide the passing yarn when the follow-up compensation device 9 is running.

[0047] like Figure 5 , Figure 9 and Figure 11 As shown, the follow-up compensation device 9 includes a first moving pair 91, a U-shaped frame 92, a guide block 93, and a first electric push rod 94. There are two sets of the first moving pairs 91. The first moving pairs 91 are respectively installed at the second fixed frame 3 and the third fixed frame 4. The first moving pairs 91 are horizontally arranged in the front-back direction. The moving parts of the first moving pairs 91 are all fixedly connected to the U-shaped frame 92. The front side of the U-shaped frame 92 is fixedly connected to the guide block 93. The rear side of the second fixed frame 3 and the third fixed frame 4 are all fixedly connected to the first electric push rod 94. The first electric push rod 94 is horizontally arranged in the front-back direction. The first electric push rod 94 is servo controlled. The pushing parts of the first electric push rod 94 are respectively connected to the adjacent U-shaped frame 92.

[0048] When the variable speed roller device 7 is running at a relatively fast speed, the yarn speed increases after passing through it, the yarn lengthens, and the tension decreases. At this time, the lower first electric push rod 94 will move according to the program, driving the lower U-shaped frame 92 and its connected guide block 93 forward. This causes the extended yarn to be stretched forward at this position by the lower guide device 8, maintaining the tension of the extended yarn and preventing it from getting tangled in other mechanical mechanisms during operation. Conversely, when the variable speed roller device 7 is running at a relatively slow speed, the yarn speed decreases, the yarn shortens, and the tension increases. At this time, the lower first electric push rod 94 will move according to the program, causing the shortened yarn to be retracted backward at this position by the lower guide device 8, reducing the tension of the shortened yarn and preventing it from getting tangled in other mechanical mechanisms. If the yarn breaks, and the roving feed speed of the feed roller device 6 is constant, the roving between the feed roller device 6 and the variable speed roller device 7 will gradually gather at this point due to the relatively slow speed of the drafting roller. That is, the roving at this position will gather because it will not receive a certain speed of drafting roller treatment, and the tension will decrease. At this time, the first electric push rod 94 on the upper side will operate according to the program, so that the roving with reduced tension is stretched forward at this position by the upper guide device 8, so that the roving at this position maintains tension. Similarly, if the variable speed roller device 7 increases its drafting roller speed, in order to maintain the tension of the roving at this position, the first electric push rod 94 on the upper side will retract the roving at this position to the rear, so that the roving at this position maintains tension. In this way, the yarn can maintain tension and constant tension during the process of passing through the drafting roller of the variable speed roller device 7 at different speeds.

[0049] By employing a follow-up compensation device that automatically adjusts the yarn tension in conjunction with the variable speed roller device, the yarn can maintain its own tension before and after passing through the variable speed drafting roller. This avoids the difficulty in setting the variable speed drafting value due to inconsistent yarn tension caused by speed changes, thus ensuring the yarn quality during variable speed drafting.

[0050] Example 3

[0051] like Figure 1 , Figure 7 and Figure 8 As shown, it also includes a variable pressure yarn exit device 10, which includes a mounting frame 101, a yarn exit shaft 102, a third rubber roller 103, a yarn exit hopper 104, and a pressure regulating component 11. The variable pressure yarn exit device 10 is located below the front side of the external frame 1 and below the third fixed frame 4. The variable pressure yarn exit device 10 is used to maintain a constant yarn exit speed after passing through the variable speed drafting roller, maintain the winding speed of the external winding machine, and ensure stable operation of the wound yarn. The variable pressure yarn exit device 10 is used to adaptively pull yarns of different diameters after passing through the variable speed drafting roller. The mounting frame 10 is located below the front side of the external frame 1. A mounting frame 101 is fixedly connected, the mounting frame 101 has a U-shaped structure, and a yarn outlet shaft 102 is rotatably connected to the front side of the mounting frame 101. A third rubber roller 103 is fixedly connected to the yarn outlet shaft 102. A yarn outlet hopper 104 is fixedly connected to the upper side of the mounting frame 101. The yarn outlet hopper 104 is trumpet-shaped and has a rounded inner structure to protect the roving from being cut by sharp edges when it passes through, and to protect the adhesion of the roving fibers. A pressure regulating component 11 is provided at the mounting frame 101. The pressure regulating component 11 is used to cooperate with the third rubber roller 103 to automatically adjust the traction pressure on the yarn, so that the yarn can be pulled out at a constant speed.

[0052] The third rubber roller 103 and the pressure regulating component 11 are connected to the yarn output spindle of the spinning machine, and the operating speed of the yarn output spindle of the spinning machine is controlled so that the third rubber roller 103 and the pressure regulating component 11 can output yarn at a constant speed, so as to keep the external winding machine winding at a constant speed. The pressure regulating component 11 will cooperate with the operation of the variable speed roller device 7 through the program. The yarn diameter will change after passing through the variable speed roller device 7. The pressure regulating component 11 will respond with a delay according to the program and the operating speed, so that the pressure regulating component 11 can adapt to yarns of different diameters and perform constant pressure traction, so that the yarn can be pulled out by the pressure regulating component 11 and the third rubber roller 103 with constant pressure.

[0053] like Figure 1 and Figure 8As shown, the pressure regulating assembly 11 includes a second sliding joint 111, a displacement frame 112, an extension frame 113, a second electric push rod 114, a displacement shaft 115, a third conveying roller 116, and a universal coupling 117. The second sliding joint 111 is fixedly connected to both sides of the mounting frame 101. The second sliding joint 111 is transversely positioned in the front-to-back direction. The displacement frame 112 is fixedly connected between the moving parts of the second sliding joint 111. The displacement shaft 115 is rotatably connected to the front side of the displacement frame 112. The rear of the mounting frame 101... An extension frame 113 is fixedly connected to the side, and a second electric push rod 114 is fixedly connected to the extension frame 113. The second electric push rod 114 is horizontally positioned in the front-to-back direction and is servo-controlled. The pushing part of the second electric push rod 114 is connected to the rear side of the displacement frame 112. A third conveying roller 116 is fixedly connected to the displacement shaft 115, and a universal coupling 117 is connected to the displacement shaft 115. The displacement shaft 115 is connected to the lead-out spindle of the spinning machine through the universal coupling 117.

[0054] The second electric push rod 114 will coordinate with the operation of the variable speed roller device 7 through a program. After passing through the variable speed roller device 7, the yarn diameter will change. The second electric push rod 114 will respond with a delay according to the coordinated program and running speed, so that the second electric push rod 114 drives the displacement frame 112 to move when responding, thereby driving the third conveying roller 116 to move. The rotation of the third conveying roller 116 after moving will be achieved through the universal coupling 117, so that the distance between the third conveying roller 116 and the third rubber roller 103 can be changed, thereby adapting to yarns of different diameters to perform constant pressure traction, so that the yarn can be pulled out by the third conveying roller 116 and the third rubber roller 103 with constant pressure.

[0055] like Figure 14As shown, it also includes a pressure stabilizing device 12, which includes a frame 121, a pressure stabilizing plate 122, a third moving pair 123, a push plate 124, a pressure stabilizing wheel 125, and a third electric push rod 126. The pressure stabilizing device 12 is located in the middle of the front side of the outer frame 1. The pressure stabilizing device 12 is used to stabilize the friction and pressure at the point where the roving enters the variable speed roller device 7, and to maintain the speed change point of the variable speed roller device 7 when it is drawing the roving. At the same time, the pressure stabilizing device 12 provides a gripping force to the roving before it is drawn, ensuring that the roving is drawn in the area of ​​the pressure stabilizing device 12. The frame 121 is fixedly connected to the middle of the front side of the outer frame 1. A pressure stabilizing plate 122 is fixedly connected to the inner side of the front wall of frame 121. A third sliding joint 123 is fixedly connected to both sides of the middle part of frame 121. The third sliding joint 123 is horizontally arranged in the front-back direction. A push plate 124 is fixedly connected between the moving parts of the third sliding joint 123. The push plate 124 and the pressure stabilizing plate 122 are rotatably connected to the opposing surfaces of the pressure stabilizing wheel 125. A third electric push rod 126 is fixedly connected to the rear side of frame 121. The third electric push rod 126 is horizontally arranged in the front-back direction. The third electric push rod 126 is servo controlled. The moving parts of the third electric push rod 126 are connected to the moving parts of the third sliding joint 123.

[0056] Based on the roving diameter of the drafting roller, the third electric push rod 126 is controlled to move the push plate 124 via its moving part, thereby changing the distance between the push plate 124 and the pressure stabilizing plate 122. This allows the variable speed roller device 7 to maintain the gripping force on the roving through the pressure stabilizing wheel 125 when drafting the roving, and to concentrate the speed change point of the roving when it is drafted, thus reducing the overall force on the roving when it is drafted.

[0057] By employing an adjustable spacing between the pressure stabilizing plate and the feed plate of the pressure stabilizing device, the feed plate and the pressure stabilizing plate can maintain the gripping force on the roving through the pressure stabilizing roller when the variable speed roller is drawing roving, and concentrate the speed change point of the roving when it is drawn, thereby reducing the overall stress on the roving when it is drawn.

[0058] like Figure 13As shown, it also includes a monitoring device 13, which includes a pressure sensor 131 and an arc-shaped guide frame 132. The monitoring device 13 is respectively located on the front side of the guide block 93. The monitoring device 13 is used to monitor the tension state of the yarn when it is subjected to the drafting roller of the variable speed roller device 7 and after the drafting roller, so as to control the two sets of first electric push rods 94 to finely adjust the position of the guide block 93 in time, so that the yarn can maintain the required tension and tightness. The pressure sensor 131 is fixedly connected to the front side of the guide block 93, and the arc-shaped guide frame 132 is fixedly connected to the front side of the pressure sensor 131. The arc-shaped guide frame 132 is a smooth structure with a low coefficient of friction.

[0059] When the variable speed roller device 7 applies variable speed drafting rollers to the roving, the upper and lower follow-up compensation devices 9 will compensate for the excess yarn position to maintain the yarn tension. The pressure sensor 131 will detect the yarn tension and will fine-tune the movement of the first electric push rod 94 through the program to keep the pressure of the yarn acting on the pressure sensor 131 within a reasonable range, further ensuring the yarn tension during variable speed drafting rollers.

[0060] By coordinating the infeed roller device, variable speed roller device, guiding device, follow-up compensation device, variable pressure output device, pressure stabilizing device, and monitoring device, the roving can be subjected to a set variable speed drafting roller, so that the roving has a set loft and loft length, and the tension of the yarn before and after the variable speed drafting roller can be maintained, which can ensure the accuracy of the set value when the roving is subjected to the variable speed drafting roller.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spinning machine for producing "cloud yarn", comprising an external frame (1), characterized in that: The outer frame (1) is fixedly connected to the top front side with a first fixed frame (2), the outer frame (1) is fixedly connected to the top front side with a second fixed frame (3), the outer frame (1) is fixedly connected to the bottom front side with a third fixed frame (4), and the outer frame (1) is fixedly connected to the bottom front side with a fourth fixed frame (5). The first fixed frame (2) is provided with a thread feed roller device (6), which is used to pull the roving downward at a constant speed; The fourth fixed frame (5) is provided with a variable speed roller device (7), which is used to electrically control the speed of the roller drafting the roving; Guide devices (8) are provided at both the second fixing frame (3) and the third fixing frame (4); The guide device (8) includes an upper guide wheel (81), which is rotatably connected to the upper side of the second fixed frame (3) and the third fixed frame (4), and a lower guide wheel (82) is rotatably connected to the lower side of both the second fixed frame (3) and the third fixed frame (4). Both the second fixed frame (3) and the third fixed frame (4) are provided with follow-up compensation devices (9). The follow-up compensation device (9) and the guide device (8) are divided into upper and lower parts. The follow-up compensation device (9) is used to advance and release the excess yarn length after being drafted by the variable speed roller device (7). The guide device (8) is used to guide the yarn during the advance and release process of the follow-up compensation device (9). The follow-up compensation device (9) includes a first movable pair (91), and there are two sets of the first movable pairs (91). The first movable pairs (91) are respectively installed at the second fixed frame (3) and the third fixed frame (4). U-shaped frames (92) are fixedly connected between the movable parts of the first movable pairs (91). Guide blocks (93) are fixedly connected to the front side of the U-shaped frames (92). A first electric push rod (94) is fixedly connected to the rear side of the second fixed frame (3) and the third fixed frame (4). The pushing parts of the first electric push rod (94) are respectively connected to the adjacent U-shaped frames (92). It also includes a monitoring device (13), which consists of two sets. The monitoring devices (13) are respectively located on the front side of the guide block (93). The monitoring devices (13) are used to monitor the tension state of the yarn when it is stretched by the variable speed roller device (7) and after stretching. A pressure sensor (131) is fixedly connected to the front side of each guide block (93), and an arc-shaped guide frame (132) is fixedly connected to the front side of the pressure sensor (131).

2. The spinning machine for producing "cloud yarn" according to claim 1, characterized in that: The feed roller device (6) includes a feed hopper (61), which is fixedly connected to the upper side of the first fixed frame (2). Two feed shafts (62) are rotatably connected to the first fixed frame (2). A first rubber roller (63) is fixedly connected to the front feed shaft (62), and a first conveying roller (64) is fixedly connected to the rear feed shaft (62).

3. The spinning machine for producing "cloud yarn" according to claim 2, characterized in that: The variable speed roller device (7) includes a variable speed shaft (71). Two variable speed shafts (71) are rotatably connected to the fourth fixed frame (5). A second rubber roller (72) is fixedly connected to the front variable speed shaft (71), and a second conveying roller (73) is fixedly connected to the rear variable speed shaft (71). A connecting frame (74) is provided on the right side of the variable speed shaft (71). Two sets of servo motors (75) are fixedly connected to the connecting frame (74). The output shaft of the servo motor (75) is connected to the two variable speed shafts (71) respectively through a coupling.

4. The spinning machine for producing "cloud yarn" according to claim 1, characterized in that: It also includes a variable pressure yarn exit device (10), which is located below the front side of the external frame (1) and below the third fixed frame (4). The variable pressure yarn exit device (10) is used to maintain a constant yarn exit speed after being stretched by the variable speed roller device. A mounting frame (101) is fixedly connected to the lower front side of the external frame (1). A yarn exit shaft (102) is rotatably connected to the front side of the mounting frame (101). A third rubber roller (103) is fixedly connected to the yarn exit shaft (102). A yarn exit hopper (104) is fixedly connected to the upper side of the mounting frame (101). A pressure regulating component (11) is provided at the mounting frame (101). The pressure regulating component (11) is used to automatically adjust the traction pressure on the yarn in conjunction with the third rubber roller (103).

5. The spinning machine for producing "cloud yarn" according to claim 4, characterized in that: The pressure regulating assembly (11) includes a second movable pair (111), which is fixedly connected to both sides of the mounting frame (101). A displacement frame (112) is fixedly connected between the movable parts of the second movable pair (111). A displacement shaft (115) is rotatably connected to the front side of the displacement frame (112). An extension frame (113) is fixedly connected to the rear side of the mounting frame (101). A second electric push rod (114) is fixedly connected to the extension frame (113). The pushing part of the second electric push rod (114) is connected to the rear side of the displacement frame (112). A third conveying roller (116) is fixedly connected to the displacement shaft (115). A universal coupling (117) is connected to the displacement shaft (115). The displacement shaft (115) is connected to the lead-out spindle of the spinning machine through the universal coupling (117).

6. The spinning frame for producing "cloud yarn" according to claim 5, characterized in that: It also includes a pressure stabilizing device (12), which is located in the middle of the front side of the outer frame (1). The pressure stabilizing device (12) is used to stabilize the friction and pressure at the point where the roving enters the variable speed roller device (7). A frame (121) is fixedly connected to the middle of the front side of the outer frame (1). A pressure stabilizing plate (122) is fixedly connected to the inner side of the front side wall of the frame (121). A third moving pair (123) is fixedly connected to both sides of the middle of the frame (121). A push plate (124) is fixedly connected between the moving parts of the third moving pair (123). A pressure stabilizing wheel (125) is rotatably connected to the opposing surfaces of the push plate (124) and the pressure stabilizing plate (122). A third electric push rod (126) is fixedly connected to the rear side of the frame (121). The moving part of the third electric push rod (126) is connected to the moving part of the third moving pair (123).

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