Adjustable multi-pressure bar draft system
By designing a chute and limiting groove structure in the adjustable multi-pressure bar drawing system, the problems of inconvenient local maintenance and wasted costs in traditional drawing systems are solved, achieving the effects of convenient replacement and cost savings.
Patent Information
- Application Number
- CN202410794645.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2044-06-19
AI Technical Summary
Traditional drawing systems are inconvenient for local maintenance and waste costs.
An adjustable multi-pressure bar drawing system is adopted, including roller blocks, curved tube assemblies and control plates. Connecting seats are installed by opening a sliding groove and a limiting groove on the top of the curved tube, and dovetail grooves are set on both sides of the connecting seats to facilitate the replacement of curved blocks. Only local parts of the curved tube assembly need to be treated instead of the entire curved tube assembly.
This facilitates the replacement of curve blocks and saves maintenance costs.
Smart Images
Figure CN118461191B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of textile machinery technology, specifically to an adjustable multi-pressure bar drafting system. Background Technology
[0002] The double-ring drafting system is a commonly used drafting method in ring spinning machines. The core of this system is the double-ring elastic jaw. The structure of the double-ring elastic jaw mainly consists of an upper ring secured by an upper pin on the upper roller, and a lower ring secured by a tension frame and a lower pin on the lower roller. A spring is pre-installed in the middle of the upper pin. During drafting, the spring presses down on the upper pin and upper ring, forming a swingable elastic jaw structure. This is the curved characteristic of the double-ring elastic jaw. The upper and lower rings combine to form a flexible sliver gripping channel. To enhance the gripping effect, this channel is designed with a curved shape determined by the shapes of the upper and lower pins. The double-ring elastic jaw drafting method improves the friction boundary strength in the middle and rear of the front drafting zone. Compared with simple drafting, it can move the fiber speed change point of the sliver forward during the drafting process. Moving the fiber speed change point forward helps to concentrate the fiber speed change point, which can ensure that the displacement deviation of the drafted sliver is within a small range after drafting, thereby ensuring that the yarn quality is not seriously deteriorated due to the drafting movement.
[0003] Traditional double-ring drafting systems are significantly affected by temperature and humidity. Double-ring drafting involves the upper and lower rings gripping and smoothly transferring the sliver, after micro-drafting by the middle and rear rollers, to the front roller. Since the movement of the upper and lower rings is driven by friction, with the lower ring being the primary driver, a more flexible ring will experience greater friction, making slippage less likely. However, a hardened ring is highly susceptible to slippage, displacement, and jerking, negatively impacting yarn quality.
[0004] The flexible damping drafting system differs significantly in structure from traditional ring spinning. This technology eliminates the upper and lower rubber rings and pins in the double-ring elastic jaws, utilizing a flexible transmission ring and hyperbolic magnetic attraction to form a fixed jaw to control fiber movement. Operation, cleaning, and maintenance are all greatly altered compared to traditional ring spinning.
[0005] However, the drawing system in general technology requires surface treatment of the entire curved tube, which is wasteful of costs and does not allow users to easily replace and maintain parts of the curved tube. The entire tube must be replaced, which is not only inconvenient for replacement and maintenance, but also not energy-efficient or environmentally friendly. Summary of the Invention
[0006] The purpose of this invention is to provide an adjustable multi-pressure bar drawing system, which aims to solve the problems of inconvenient local maintenance and wasteful costs in general drawing systems.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: The adjustable multi-pressure bar drafting system includes: roller blocks, a curved tube assembly, and a control plate. There are two roller blocks, each equipped with a fixed seat and a sliding seat. The curved tube assembly is mounted on the opposing sliding seats of the two roller blocks. The curved tube assembly includes a curved tube, the top of which has multiple grooves, each groove having limit grooves at both ends. A connecting seat is slidably installed inside the groove, with both ends of the connecting seat slidably installed inside the limit grooves via sliders to prevent the connecting seat from falling out of the groove. A spring is provided between the connecting seat and the bottom wall of the groove. First dovetail grooves penetrating both ends are provided on both sides of the connecting seat. First curved blocks and second curved blocks are respectively installed inside the two first dovetail grooves via first and second connecting strips. The control plate is mounted on the curved tube and used to install the tension frame assembly. An S-shaped gap is formed between the curved tube assembly and the control plate for the yarn to pass through and for drafting the yarn.
[0008] The beneficial effects are as follows: by opening a groove at the top of the curved tube, and opening limiting grooves at both ends of the groove to install the connecting seat, and setting the first positioning block and the second positioning block on the bottom wall of the groove and the connecting seat respectively to install the spring, it is convenient for thicker yarns or yarns with local protrusions to pass through. Furthermore, opening the first dovetail groove on both sides of the connecting seat to install the slidingly installed first curved block and second curved block not only makes it convenient for users to replace the first curved block and the second curved block, but also only requires surface treatment of the first curved block and the second curved block, avoiding waste of surface treatment of the entire curved tube assembly, thus achieving the purpose of easy replacement and cost saving.
[0009] A further technical solution of the present invention is that each roller block is equipped with two sliding seats, and the front roller, middle roller and rear roller are respectively rotatably installed inside the two corresponding fixed seats and sliding seats through roller bearings.
[0010] A further technical solution of the present invention is that a pneumatic rocker is installed above the roller block, and a front roller, a middle roller and a rear roller are rotatably installed at the bottom of the pneumatic rocker, respectively, and the front roller, the middle roller and the rear roller correspond one-to-one with the front roller, the middle roller and the rear roller.
[0011] The beneficial effect is that the yarn is pressed onto the roller by the roller, which increases the roller's grip on the yarn and reduces yarn slippage.
[0012] A further technical solution of the present invention is that both ends of the curved tube are connected to two slide blocks through positioning ports, a first positioning block is fixedly installed at the bottom of the slide groove, a second positioning block is fixedly installed at the bottom of the connecting seat, and both ends of the spring are respectively sleeved on the first positioning block and the second positioning block.
[0013] A further technical solution of the present invention is that the width of the connecting seat is the same as the width of the curved tube, and multiple sets of bearing blocks for mounting the control board are fixedly installed on the upper surface of the curved tube. The bearing blocks are in sets of two, and the upper surface of the bearing blocks is provided with bearing grooves.
[0014] The beneficial effect is that when the connecting seat is installed inside the slide groove, the first connecting strip and the second connecting strip can be limited by the end wall of the slide groove to prevent the first curved block and the second curved block from falling off during use.
[0015] A further technical solution of the present invention is that mounting blocks are fixedly installed at both ends of the control board, the mounting blocks have mounting grooves for mounting support blocks inside, one end of the mounting blocks is also threaded with a fastening bolt for clamping the support block, and the bottom of the support block is provided with an arc-shaped convex surface that matches the bearing groove.
[0016] A further technical solution of the present invention is that a first curved plate is slidably mounted on the bottom of the control board.
[0017] A further technical solution of the present invention is that a first connecting groove is provided on one side of the control panel, a second connecting groove is provided on the top of the inner wall of the first connecting groove, a first slide bar is slidably installed inside the first connecting groove, a second slide bar is fixedly installed on the top of the first slide bar, a plurality of second elastic elements are fixedly installed between the first slide bar and the bottom wall of the first connecting groove, the second slide bar is slidably installed inside the second connecting groove, a wedge is fixedly installed on one side of the first connecting bar, the wedge has an inclined surface, a second dovetail groove is provided on the inclined surface, a second curved plate is installed inside the second dovetail groove through a fourth connecting bar, the second curved plate corresponds to the position of the first curved block, and the second curved plate can drive the second elastic element to rise when a yarn with a partial protrusion passes through so that the yarn can pass smoothly.
[0018] A further technical solution of the present invention is that the tension frame assembly is fixedly installed on the upper surface of the control panel, the tension frame assembly has a rotating seat, the rotating seat can be rotated from a state perpendicular to the tension frame assembly to an inclined state, and the middle part of the tension frame assembly is also equipped with a hook for installing the middle roller.
[0019] A further technical solution of the present invention is that a flexible transmission ring is wound around both the curved tube assembly and the control plate. The flexible transmission ring is used to ensure that the yarn passes smoothly between the control plate and the curved tube assembly. When no yarn passes through, the flexible transmission ring is in contact with the first curved block and the second curved block. Attached Figure Description
[0020] Figure 1This is a schematic diagram of the structure of the present invention.
[0021] Figure 2 This is a schematic diagram of the control board from a first-view perspective in a specific embodiment of the present invention.
[0022] Figure 3 This is a schematic diagram of the control board from a second perspective in a specific embodiment of the present invention.
[0023] Figure 4 This is a schematic diagram of the curved tube assembly in a specific embodiment of the present invention.
[0024] Figure 5 This is a schematic diagram of the connecting seat in a specific embodiment of the present invention.
[0025] Figure 6 This is a structural schematic diagram of the tension frame assembly in a specific embodiment of the present invention.
[0026] Figure 7 This is a cross-sectional view of the control panel in a specific embodiment of the present invention.
[0027] In the diagram: 1-Roller block, 11-Fixed seat, 12-Slide block, 13-Roller bearing, 14-Front roller, 15-Middle roller, 16-Rear roller, 2-Curved tube assembly, 21-Curved tube, 211-Slide groove, 212-Limiting groove, 213-First positioning block, 22-Positioning port, 23-Connecting seat, 231-Second positioning block, 232-Slider, 233-First dovetail groove, 24-Spring, 25-First curved block, 251-First connecting strip, 26-Second curved block, 261-Second connecting strip, 27-Bearing block, 271-Bearing groove. 3-Control panel, 31-Mounting block, 311-Mounting groove, 312-Fasting bolt, 32-Support block, 33-Third connecting strip, 34-First curved plate, 35-Second dovetail groove, 36-Second curved plate, 361-Fourth connecting strip, 37-First connecting groove, 371-Second connecting groove, 38-First sliding bar, 381-Second sliding bar, 382-Second elastic element, 39-Inclined block, 4-Tension frame assembly, 41-Rotating seat, 42-Hook, 5-Pneumatic rocker frame, 51-Front roller, 52-Middle roller, 53-Rear roller, 6-Flexible transmission ring. Detailed Implementation
[0028] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.
[0029] like Figure 1As shown, the adjustable multi-pressure bar stretching system includes two roller blocks 1. Each roller block 1 has a fixed seat 11 and two slides 12 fixedly installed, and the fixed seats 11 and slides 12 on the two roller blocks 1 correspond one-to-one. The front roller 14, middle roller 15 and rear roller 16 are respectively rotatably installed inside the two corresponding fixed seats 11 and slides 12 through roller bearings 13. Curved tube assemblies 2 are installed inside the two corresponding slides 12. A control plate 3 is slidably installed on the curved tube assembly 2. A tension frame assembly 4 is installed on the control plate 3. A pneumatic rocker 5 is installed above the roller blocks 1. A front roller 51 and a middle roller 52 are rotatably installed at the bottom of the pneumatic rocker 5. The front roller 51, middle roller 52, and rear roller 53 are rotatably installed inside the tension frame assembly 4. The front roller 51, middle roller 52, and rear roller 53 correspond one-to-one with the front roller 14, middle roller 15, and rear roller 16, respectively, so that the yarn is pressed onto the rollers through the rollers, thereby improving the rollers' gripping force on the yarn and reducing yarn slippage. The curved tube assembly 2, control plate 3, and tension frame assembly 4 are all located between the front roller 14 and the middle roller 15. An S-shaped gap is formed between the curved tube assembly 2 and the control plate 3 to allow the yarn to pass through, thereby stretching the yarn. When the roving passes through the gap between the curved tube assembly 2 and the control plate 3, the roving can be stretched into fine yarn through the stretching effect of the natural bending of the fiber, thereby improving the quality of spinning.
[0030] like Figures 2-5 As shown, the curved tube assembly 2 includes a curved tube 21. Both ends of the curved tube 21 are connected to two slide blocks 12 via positioning ports 22. Multiple sliding grooves 211 are formed at the top of the curved tube 21, extending through both sides of the curved tube 211. Each sliding groove 211 has a limiting groove 212 at both ends. The limiting groove 212 is L-shaped, with the shorter end extending through one side of the curved tube 21. The limiting grooves 212 at both ends of the sliding groove 211 are symmetrically distributed. A first positioning block 213 is fixedly installed at the bottom of the sliding groove 211. A connecting seat 23 is slidably installed inside the sliding groove 211. A second positioning block 231 is fixedly installed at the bottom of the connecting seat 23. A first elastic element 24 is provided between the bottom wall of the connecting seat 23 and the slide groove 211. In this embodiment, the first elastic element 24 is a spring. The two ends of the first elastic element 24 are respectively sleeved on the first positioning block 213 and the second positioning block 231. A slider 232 is fixedly installed at both ends of the connecting seat 23. The slider 232 enters the interior of the slide groove 211 from the shorter end of the slide groove 211 and slides along the longer end of the slide groove 211. In this embodiment, the first positioning block 213, the second positioning block 231 and the slider 232 are all cylindrical.
[0031] Both sides of the connecting seat 23 are provided with first dovetail grooves 233 that pass through both ends. The first curved block 25 and the second curved block 26 are respectively installed inside the two first dovetail grooves 233 through the first connecting strip 251 and the second connecting strip 261. The width of the connecting seat 23 is the same as the width of the curved tube 21. Therefore, when the connecting seat 23 is installed inside the slide groove 211, the first connecting strip 251 and the second connecting strip 261 can be limited by the end wall of the slide groove 211 to prevent the first curved block 25 and the second curved block 26 from falling off during use. On the one hand, it is convenient for users to replace the first curved block 25 and the second curved block 26. On the other hand, only the surface of the first curved block 25 and the second curved block 26 needs to be treated, avoiding the surface treatment of the entire curved tube assembly 2, which can save costs.
[0032] The upper surface of the curved tube 21 is also fixedly installed with multiple sets of support blocks 27 for mounting the control board 3. The support blocks 27 are in pairs. The upper surface of the support block 27 is provided with a support groove 271, which is an arc-shaped groove. The inside of the curved tube 21 is also installed with a first magnetic strip (not shown in the figure).
[0033] like Figure 2 , 3 As shown in Figure 6, a second magnetic strip (not shown in the figure) is installed inside the control board 3. The second magnetic strip and the first magnetic strip have opposite poles facing each other, so that the control board 3 can be installed on the curved tube assembly 2 by magnetic attraction. Mounting blocks 31 are fixedly installed at both ends of the control board 3. The mounting blocks 31 have mounting grooves 311 inside for mounting the support blocks 32. One end of the mounting blocks 31 is also threaded with a fastening bolt 312 for clamping the support blocks 32. The bottom of the support blocks 32 has an arc-shaped convex surface that matches the bearing groove 271. The distance between the control board 3 and the curved tube assembly 2 can be adjusted by adjusting the position of the support blocks 32. A third connecting strip 33 is fixedly installed at the bottom of the control board 3. A first curved plate 34 is slidably installed on the outer surface of the third connecting strip 33.
[0034] like Figure 2 , 3As shown in Figures 6 and 7, a first connecting groove 37 is provided on one side of the control panel 3. A second connecting groove 371 is provided on the top of the inner wall of the first connecting groove 37. A first slide bar 38 is slidably installed inside the first connecting groove 37. A second slide bar 381 is fixedly installed on the top of the first slide bar 38. A plurality of second elastic elements 382 are fixedly installed between the first slide bar 38 and the bottom wall of the first connecting groove 37. The structure and installation method of the second elastic elements 382 are exactly the same as those of the first elastic elements 24. The second slide bar 381 is slidably installed on the first connecting groove 37. Inside the second connecting groove 371, a wedge block 39 is fixedly installed on one side of the first connecting strip 38. The wedge block 39 has an inclined surface, and a second dovetail groove 35 is opened on the inclined surface. Inside the second dovetail groove 35, a second curved plate 36 is installed through the fourth connecting strip 361. The second curved plate 36 corresponds to the position of the first curved block 25. The second curved plate 36 can slide up and down with the first sliding strip 38. When a partially protruding yarn passes through, the protrusion can lift the second curved plate 36 to ensure that the yarn can pass through smoothly.
[0035] like Figure 2 , 3 As shown in Figure 6, the tension frame assembly 4 is fixedly installed on the upper surface of the control plate 3. The tension frame assembly 4 has a rotating seat 41, and a torsion spring (not shown in the figure) is installed at the rotating shaft of the rotating seat 41. The rotating seat 41 can be rotated from a state perpendicular to the tension frame assembly 4 to an inclined state. A hook 42 is also installed in the middle of the tension frame assembly 4, and the middle roller 51 is installed inside the hook 42.
[0036] like Figure 2 and 6 As shown, the outer surfaces of the middle roller 51, the rotating seat 41, the first curve plate 34 and the second curve plate 36 are all wrapped with flexible transmission rings 6. The flexible transmission rings 6 are used to ensure that the yarn passes smoothly between the control plate 3 and the curve tube assembly 2. When no yarn passes through, the flexible transmission rings 6 are in contact with the first curve block 25 and the second curve block 26.
[0037] During use, when thicker yarns or yarns with local protrusions pass through the first curved block 25 and the second curved block 26, the first elastic element 24 can be compressed to lower the first curved block 25 and the second curved block 26, so as to ensure the smooth passage of the yarn. When it is necessary to replace the first curved block 25 or the second curved block 26, simply press down the connecting seat 23 to slide it out from the shorter end of the slide groove 211, and the first curved block 25 or the second curved block 26 can be replaced.
[0038] In this specific embodiment, a groove 211 is opened at the top of the curved tube 21, and a limiting groove 212 is opened at both ends of the groove 211 to install the connecting seat 23. A first positioning block 213 and a second positioning block 231 are respectively set on the bottom wall of the groove 211 and the connecting seat 23 to install the first elastic member 24. This facilitates the passage of thicker yarns or yarns with partial protrusions. Furthermore, a first dovetail groove 233 is opened on both sides of the connecting seat 23 to install the slidingly installed first curved block 25 and second curved block 26. This not only makes it convenient for users to replace the first curved block 25 and the second curved block 26, but also only requires surface treatment of the first curved block 25 and the second curved block 26, avoiding waste of surface treatment of the entire curved tube assembly 2, thus achieving the purpose of easy replacement and cost saving.
Claims
1. An adjustable multi-pressure bar drawing system, characterized in that it includes: Roller block (1), there are two roller blocks (1), each roller block (1) is equipped with a fixed seat (11) and a sliding seat (12). The curved tube assembly (2) is installed on the opposite slides (12) of two roller blocks (1). The curved tube assembly (2) includes a curved tube (21). The top of the curved tube (21) is provided with multiple slide grooves (211), and each slide groove (211) has a limit groove (212) at both ends. The connecting seat (23) is slidably installed inside the slide groove (211). The two ends of the connecting seat (23) are slidably installed inside the limiting groove (212) by the slider (232) to prevent the connecting seat (23) from falling out of the slide groove (211). A spring (24) is provided between the connecting seat (23) and the bottom wall of the slide groove (211). The two sides of the connecting seat (23) are provided with first dovetail grooves (233) that pass through both ends. The two first dovetail grooves (233) are respectively installed with first curved blocks (25) and second curved blocks (26) through first connecting strips (251) and second connecting strips (261). The control plate (3) is mounted on the curved tube (21) and is used to install the tension frame assembly (4), and an S-shaped gap is formed between the curved tube assembly (2) and the control plate (3) for the yarn to pass through and for the yarn to be drafted. A first connecting groove (37) is provided on one side of the control panel (3), and a second connecting groove (371) is provided on the top of the inner wall of the first connecting groove (37). A first slide bar (38) is slidably installed inside the first connecting groove (37), and a second slide bar (381) is fixedly installed on the top of the first slide bar (38). A plurality of second elastic elements (382) are fixedly installed between the first slide bar (38) and the bottom wall of the first connecting groove (37). The second slide bar (381) is slidably installed in the second connecting groove (37). Inside the first slide bar (38), a slant block (39) is fixedly installed on one side. The slant block (39) has a slant surface, and a second dovetail groove (35) is opened on the slant surface. A second curve plate (36) is installed inside the second dovetail groove (35) through a fourth connecting strip (361). The second curve plate (36) corresponds to the position of the first curve block (25). The second curve plate (36) can drive the second elastic element (382) to rise when a yarn with a local protrusion passes through so that the yarn can pass smoothly.
2. The adjustable multi-pressure bar drawing system according to claim 1, characterized in that, Each roller block (1) is equipped with two slides (12), and the front roller (14), middle roller (15) and rear roller (16) are respectively rotatably mounted inside the two corresponding fixed seats (11) and slides (12) through roller bearings (13).
3. The adjustable multi-pressure bar drawing system according to claim 2, characterized in that, A pneumatic rocker (5) is installed above the roller block (1). A front roller (51), a middle roller (52), and a rear roller (53) are rotatably installed on the bottom of the pneumatic rocker (5). The front roller (51), the middle roller (52), and the rear roller (53) correspond one-to-one with the front roller (14), the middle roller (15), and the rear roller (16), respectively.
4. The adjustable multi-pressure bar drawing system according to claim 1, characterized in that, Both ends of the curved tube (21) are connected to two slide blocks (12) through positioning ports (22). A first positioning block (213) is fixedly installed at the bottom of the slide groove (211), and a second positioning block (231) is fixedly installed at the bottom of the connecting seat (23). Both ends of the spring (24) are respectively sleeved on the first positioning block (213) and the second positioning block (231).
5. The adjustable multi-pressure bar drawing system according to claim 1, characterized in that, The width of the connecting seat (23) is the same as the width of the curved tube (21). Multiple sets of bearing blocks (27) for installing the control board (3) are also fixedly installed on the upper surface of the curved tube (21). The bearing blocks (27) are in pairs, and the upper surface of the bearing blocks (27) is provided with bearing grooves (271).
6. The adjustable multi-pressure bar drawing system according to claim 1, characterized in that, The control board (3) has mounting blocks (31) fixedly installed at both ends. The mounting blocks (31) have mounting grooves (311) for mounting the support blocks (32) inside. One end of the mounting blocks (31) is also threaded with fastening bolts (312) for clamping the support blocks (32). The bottom of the support blocks (32) has an arc-shaped convex surface that matches the bearing groove (271).
7. The adjustable multi-pressure bar drawing system according to claim 1, characterized in that, The first curve plate (34) is slidably mounted on the bottom of the control panel (3).
8. The adjustable multi-pressure bar drawing system according to claim 1, characterized in that, The tension frame assembly (4) is fixedly installed on the upper surface of the control plate (3). The tension frame assembly (4) has a rotating seat (41). The rotating seat (41) can rotate from a state perpendicular to the tension frame assembly (4) to an inclined state. The tension frame assembly (4) also has a hook (42) for installing the middle roller (52) installed in the middle.
9. The adjustable multi-pressure bar drawing system according to any one of claims 1-8, characterized in that, Both the curved tube assembly (2) and the control plate (3) are equipped with flexible transmission rings (6). The flexible transmission rings (6) are used to ensure that the yarn passes smoothly between the control plate (3) and the curved tube assembly (2). When no yarn passes through, the flexible transmission rings (6) are in contact with the first curved block (25) and the second curved block (26).
Citation Information
Patent Citations
Double-S-curve soft drafting device
CN104372463A
Flexible damping type drafting system
CN118147793A