Cotton sliver snapping machine for yarn production

Abstract

The invention relates to the technical field of textile, in particular to a cotton sliver snapping machine for yarn production, which comprises two conveying frames, cotton slivers are conveyed on the upper sides of the conveying frames, a gap is reserved between the two conveying frames, and the ends, close to each other, of the two conveying frames are bent downwards to form arc-shaped bearing plates; the fixing shaft is located above the arc-shaped bearing plate, and a connecting column rotating around the fixing shaft is arranged on the outer side of the fixing shaft; the device has the beneficial effects that the ends, close to each other, of the two conveying frames are bent downwards to form the arc-shaped bearing plates, the sawtooth grooves which are distributed at equal intervals and staggered with each other are formed in the edges of the arc-shaped bearing plates, the pricking needles can penetrate through the sawtooth grooves along with rotation of the connecting columns around the fixing shafts, and cotton slivers are blocked by the arc-shaped bearing plates; therefore, on one hand, the cotton sliver can be quickly snapped, and on the other hand, the phenomenon of wiredrawing generated after the cotton sliver is fractured is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of textiles, and specifically relates to a sliver breaker for yarn production. Background Art

[0002] With the continuous improvement of the automation level of textile equipment, the automatic conveying and automatic sliver bobbin changing system will be widely used in textile mills. At present, when changing sliver bobbins on a roving frame, most of the sliver breaking processes are carried out manually by relying on personal experience.

[0003] In the prior art, a Chinese invention with the publication number CN110565219B discloses an automatic sliver breaking device for a roving frame. By setting a sleeve at one end of an arc-shaped swing arm and arranging a needle-piercing structure outside the sleeve, and relying on the rotation of the swing arm, the needle-piercing structure pierces the surface of the sliver to achieve the automatic sliver breaking process.

[0004] However, currently, since the sliver itself is flexible, when the needle-piercing structure pierces into the sliver, the sliver will deform accordingly, resulting in the needle-piercing structure being unable to ensure uniform and complete penetration of the sliver surface. The cut seam after sliver breaking is prone to wire drawing phenomenon, which further affects the subsequent conveying and processing of the sliver. Therefore, the present invention proposes a sliver breaker for yarn production to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a sliver breaker for yarn production to solve the problem of wire drawing phenomenon prone to occur in the cut seam after sliver breaking as proposed in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A sliver breaker for yarn production, comprising: A conveying frame, on the upper side of which a sliver is conveyed. There are two conveying frames, and a gap is left between the two conveying frames. One end of each of the two conveying frames close to each other is bent downward to form an arc-shaped receiving plate. A sawtooth groove is opened at the edge of the arc-shaped receiving plate, and the two groups of sawtooth grooves are offset from each other; A fixed shaft, which is located above the arc-shaped receiving plate. A connecting column that rotates around it is arranged outside the fixed shaft. An arc-shaped clamping plate is fixed outside the connecting column. Needle points are arranged at the edge of the arc-shaped clamping plate and correspond to the sawtooth grooves directly below them.

[0007] Preferably, support upright frames are fixed on both sides of the conveying frame. The two ends of the fixed shaft are respectively fixedly connected to the two support upright frames. A rotating plate is arranged outside the end of the fixed shaft, and the middle part of the rotating plate is movably sleeved outside the fixed shaft. The connecting column is fixed between one ends of the two rotating plates.

[0008] Preferably, a conveying roller is fixed between the other ends of the two turning plates. The conveying roller and the connecting column are symmetrically distributed around the fixed shaft. The conveying roller rotates around the fixed shaft and presses on the surface of the sliver. One end of the conveying roller is provided with a motor for driving its rotation.

[0009] Preferably, a driving assembly is provided at one end of the connecting column. The driving assembly includes a hollow cylinder. The inner cavities at both ends of the hollow cylinder are movably inserted with telescopic rods. One end of the telescopic rod is fixed with a connecting sleeve. A connecting shaft is fixed on the surface of the turning plate. The two connecting sleeves are respectively movably sleeved outside the connecting shafts at corresponding positions.

[0010] Preferably, a driving block is fixed on the outside of the hollow cylinder. A driving screw rod is movably penetrated through the middle of the driving block by threads. The driving screw rod is driven to rotate by a motor. Guide columns for guiding the hollow cylinder are provided on the outer sides at both ends of the hollow cylinder.

[0011] Preferably, a top plate and a bottom plate are respectively arranged at the upper and lower ends of the driving screw rod. The upper and lower ends of the guide column are respectively fixedly connected to the top plate and the bottom plate. The two ends of the bottom plate are respectively fixed on the supporting vertical frames outside the two conveying frames.

[0012] Preferably, a bushing is fixedly penetrated through the middle of the turning plate. The bushing is movably sleeved outside the end of the fixed shaft.

[0013] Preferably, a limiting notch is formed at one end of the bushing, and the central angle of the limiting notch is less than 180 degrees. A limiting block is arranged in the inner cavity of the limiting notch and is fixed on the surface of the fixed shaft.

[0014] Preferably, the thorn needle is formed by cutting a tooth groove at the edge of an arc-shaped clamping plate. The end of the thorn needle is a tip structure. A pressing platform is fixed in the middle of the inner side wall of the thorn needle, and the edge of the pressing platform is aligned with the root of the thorn needle.

[0015] Preferably, the tooth groove width of the sawtooth groove is greater than the width of the thorn needle. The width of the thorn needle is less than the distance between two adjacent thorn needles. When the connecting column rotates around the fixed shaft, the two groups of thorn needles cross and stagger each other.

[0016] Compared with the prior art, the beneficial effects of the present invention are: In the present invention, at both ends of two conveying frames that are close to each other, downward bends are formed to form arc-shaped receiving plates. A plurality of serrated grooves that are equally spaced and offset from each other are provided at the edges of the arc-shaped receiving plates. On the outer side of the fixed shaft, conveying rollers and connecting columns that are centrosymmetrically distributed are provided. An arc-shaped clamping plate is fixed on the surface of the connecting column, and thorns corresponding to the serrated grooves are provided at the edge of the arc-shaped clamping plate. As the connecting column rotates around the fixed shaft, the thorns can pass through the serrated grooves, and the cotton strip is blocked by the arc-shaped receiving plate, ensuring that the thorns can completely and evenly pierce the cotton strip. On the one hand, the rapid breaking of the cotton strip is realized, and on the other hand, the wire drawing phenomenon generated after the cotton strip breaks is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 is a sectional schematic diagram of the overall structure of the present invention; Figure 3 is a three-dimensional schematic diagram of the structure of the arc-shaped receiving plate of the present invention; Figure 4 is an installation schematic diagram of the structure of the connecting column of the present invention; Figure 5 For the present invention Figure 4 is an enlarged schematic diagram of the structure at A in; Figure 6 is a three-dimensional schematic diagram of the structure of the drive assembly of the present invention; Figure 7 is a schematic diagram of the installation position of the structure of the arc-shaped clamping plate of the present invention; Figure 8 is a three-dimensional schematic diagram of the structure of the arc-shaped clamping plate of the present invention.

[0018] In the figure: 1, conveying frame; 2, arc-shaped receiving plate; 21, serrated groove; 3, fixed shaft; 31, rotating plate; 32, shaft sleeve; 321, limiting notch; 322, limiting block; 33, connecting shaft; 4, conveying roller; 5, connecting column; 51, arc-shaped clamping plate; 52, thorn; 53, pressing platform; 6, drive assembly; 61, hollow cylinder; 62, telescopic rod; 63, connecting sleeve; 64, drive block; 65, drive screw; 66, top plate; 67, bottom plate; 68, guide post; 7, support upright frame; 8, cotton strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to clearly and completely describe the purpose, technical solution of the present invention, and make the advantages clearer, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0020] Please refer to Figures 1 to 6 , the present invention provides a technical solution: Embodiment 1, a sliver breaker for yarn production, comprising: a conveying frame 1 and a fixed shaft 3.

[0021] Specifically, a sliver 8 is conveyed on the upper side of the conveying frame 1. There are two conveying frames 1, and a gap is left between the two conveying frames 1. As Figure 1 and Figure 2 shown, a conveying shaft roller is provided in the middle of the conveying frame 1 to reduce the friction force suffered by the sliver 8 during conveying. One end of each of the two conveying frames 1 close to each other is bent downward to form an arc-shaped receiving plate 2. Sawtooth grooves 21 are provided at the edges of the arc-shaped receiving plate 2, and the two groups of sawtooth grooves 21 are offset from each other. When the sliver 8 is conveyed, it is in a straightened state, and the sliver 8 does not come into direct contact with the arc-shaped receiving plate 2. Therefore, the sawtooth grooves 21 on the arc-shaped receiving plate 2 will not scratch the sliver 8 and cause damage to the surface of the sliver 8; Secondly, the fixed shaft 3 is located above the arc-shaped receiving plate 2. A connecting column 5 that rotates around it is provided on the outside of the fixed shaft 3. The fixed shaft 3 itself remains fixed. When the connecting column 5 rotates around the fixed shaft 3, it can approach or move away from the sliver 8. An arc-shaped clamping plate 51 is fixed on the outside of the connecting column 5. Needles 52 are provided at the edge of the arc-shaped clamping plate 51, and the needles 52 correspond to the sawtooth grooves 21 directly below them. When the connecting column 5 rotates around the fixed shaft 3 and approaches the sliver 8, the needles 52 at the edge of the arc-shaped clamping plate 51 can pierce the sliver 8 from top to bottom. When the needles 52 move from top to bottom, the sliver 8 will be slightly bent downward under the downward pressure. At this time, the arc-shaped receiving plate 2 will block the sliver 8. Since the needles 52 can pass through the sawtooth grooves 21, no matter what the density of the sliver 8 is, the needles 52 can finally completely pierce the sliver 8. Then, as the connecting column 5 continues to rotate around the fixed shaft 3, the two groups of needles 52 move away from each other, so that the sliver 8 can be broken; since the two groups of sawtooth grooves 21 are offset from each other and the needles 52 correspond to the sawtooth grooves 21, the two groups of needles 52 are also offset from each other, which can avoid interference between the two groups of needles 52 during movement.

[0022] In order to install the connecting column 5, the present application also has support brackets 7 fixed on both sides of the conveying frame 1. Both ends of the fixed shaft 3 are fixedly connected to the two support brackets 7 respectively. The fixed shaft 3 is relatively fixed to the conveying frame 1 through the support brackets 7. A rotating plate 31 is provided on the outer side of the end of the fixed shaft 3, and the middle of the rotating plate 31 is movably sleeved on the outside of the fixed shaft 3. The connecting column 5 is fixed between one ends of the two rotating plates 31. As Figure 4 and Figure 7As shown, the rotating plate 31 can rotate around its middle part, thereby driving the connecting column 5 to rotate around the fixed shaft 3. And since the connecting column 5 remains relatively fixed with the rotating plate 31, the connecting column 5 will not rotate around its own axis. Therefore, when the needle 52 moves, its tip can pierce through the sliver 8.

[0023] In order to convey the sliver 8, the present application further has a conveying roller 4 fixed between the other ends of the two rotating plates 31. The conveying roller 4 and the connecting column 5 are symmetrically distributed around the fixed shaft 3. The conveying roller 4 rotates around the fixed shaft 3 and presses on the surface of the sliver 8. One end of the conveying roller 4 is provided with a motor for driving its rotation. When the rotating plate 31 rotates and drives the conveying roller 4 to be at the lowest point position, the conveying roller 4 can press on the upper surface of the sliver 8. At this time, the rotation of the conveying roller 4 can realize the conveyance of the sliver 8. When the rotating plate 31 rotates and moves the conveying roller 4 to the position as Figure 7 shown, the conveying roller 4 is completely separated from the sliver 8, and the tip of the needle 52 can just pierce into the sliver 8 from top to bottom. As the rotating plate 31 continues to rotate, the two groups of needles 52 can move away from each other. Therefore, the sliver 8 can be broken between the two groups of needles 52. Then the rotating plate 31 rotates back to the reset position, moves the conveying roller 4 to the lowest point position, and the conveying roller 4 can convey the sliver 8 again.

[0024] In order to drive the rotation of the rotating plate 31, the present application further has a driving assembly 6 provided at one end of the connecting column 5. The driving assembly 6 is mainly used to drive the rotation of the rotating plate 31. Specifically, the driving assembly 6 includes a hollow cylinder 61. The inner cavities at both ends of the hollow cylinder 61 are both movably inserted with telescopic rods 62. The telescopic rods 62 can perform telescopic sliding along the length direction of the hollow cylinder 61. A connecting sleeve 63 is fixed at one end of the telescopic rod 62. A connecting shaft 33 is fixed on the surface of the rotating plate 31. The two connecting sleeves 63 are respectively movably sleeved outside the connecting shafts 33 at the corresponding positions. Combining Figure 6 and Figure 7 as shown, when the hollow cylinder 61 slides up and down, the telescopic rods 62 can drive the connecting shafts 33 to move up and down through the connecting sleeves 63. And since the rotation of the connecting shafts 33 will drive the rotation of the rotating plate 31, the up and down movement of the hollow cylinder 61 can drive the rotating plate 31 to rotate forward and backward.

[0025] To drive the hollow cylinder 61 to move up and down, the present application further has a driving block 64 fixed to the outside of the hollow cylinder 61. A driving screw 65 is movably connected through the middle of the driving block 64 by means of threads. The driving screw 65 is driven to rotate by a motor. When the driving screw 65 rotates, it drives the driving block 64 to move up and down through the threads, thereby realizing the up and down movement of the hollow cylinder 61. Guide columns 68 for guiding are arranged on the outer sides of both ends of the hollow cylinder 61. A guide sleeve is movably sleeved on the outside of the guide column 68, and the guide sleeve is fixed to the end of the hollow cylinder 61. The setting of the guide column 68 is mainly used to prevent the hollow cylinder 61 from tilting. Therefore, the two rotating plates 31 at both ends of the hollow cylinder 61 can rotate synchronously and in opposite directions; in addition, the present device can also use a linear driving structure known in the prior art such as a vertically placed cylinder or oil cylinder to drive the hollow cylinder 61 to move up and down, which will not be elaborated here.

[0026] To install and position the driving screw 65, the present application further has a top plate 66 and a bottom plate 67 respectively arranged at the upper and lower ends of the driving screw 65. The upper and lower ends of the guide column 68 are respectively fixedly connected to the top plate 66 and the bottom plate 67. The two ends of the bottom plate 67 are respectively fixed on the supporting upright frames 7 outside the two conveying frames 1. The setting of the top plate 66 and the bottom plate 67 is used to install and position the guide column 68 and the driving screw 65.

[0027] To limit the rotation of the rotating plate 31, the present application further has a bushing 32 fixedly penetrated through the middle of the rotating plate 31. The bushing 32 is movably sleeved on the outside of the end of the fixed shaft 3. A limiting notch 321 is opened at one end of the bushing 32, and the central angle of the limiting notch 321 is less than 180 degrees. A limiting block 322 is arranged in the inner cavity of the limiting notch 321, and the limiting block 322 is fixed on the surface of the fixed shaft 3. As Figure 4 and Figure 5 shown, the cooperation of the limiting block 322 and the limiting notch 321 can be used to limit the rotation angle of the rotating plate 31.

[0028] To improve the strength of the lancet 52, the lancet 52 of the present application is formed by cutting a tooth groove at the edge of the arc-shaped clamping plate 51. The end of the lancet 52 is a tip structure. As Figure 8 shown, the arc-shaped clamping plate 51 and the lancet 52 are an integral structure and are processed and formed by an external cutting device. The lancet 52 itself has higher strength compared to the structure formed by welding and is not easily broken or damaged. A pressing platform 53 is fixed in the middle of the inner side wall of the lancet 52, and the edge of the pressing platform 53 is aligned with the root of the lancet 52. The setting of the pressing platform 53 is used to reinforce the root of the lancet 52 and further avoid the possibility of the lancet 52 breaking.

[0029] To avoid interference between the two sets of lancets 52, the width of the tooth groove of the serrated groove 21 of the present application is greater than the width of the lancet 52. Therefore, the lancet 52 can pass through the inner cavity of the serrated groove 21 during movement. The width of the lancet 52 is less than the distance between two adjacent lancets 52. When the connecting column 5 rotates around the fixed shaft 3, the two sets of lancets 52 cross and stagger each other. When the lancet 52 rotates and moves, the two sets of lancets 52 can just cross and pass through each other without movement interference.

[0030] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sliver breaking machine for yarn production, characterized in that: include: A conveying frame (1), wherein cotton strips (8) are conveyed on the upper side of the conveying frame (1), two conveying frames (1) are provided, and a gap is left between the two conveying frames (1), and the ends of the two conveying frames (1) that are close to each other are bent downward to form an arc-shaped receiving plate (2), and the edges of the arc-shaped receiving plate (2) are provided with sawtooth grooves (21), and the two groups of sawtooth grooves (21) are staggered with each other; A fixed shaft (3), the fixed shaft (3) is located above the arc-shaped receiving plate (2), a connecting column (5) is arranged on the outer side of the fixed shaft (3) and rotates around the fixed shaft, an arc-shaped clamping plate (51) is fixed on the outer side of the connecting column (5), a needle (52) is arranged at the edge of the arc-shaped clamping plate (51), and the needle (52) corresponds to the sawtooth groove (21) directly below the needle (52).

2. A sliver breaking machine for yarn production according to claim 1, characterized in that: Support frames (7) are fixed on both sides of the conveying frame (1), and the two ends of the fixed shaft (3) are respectively fixedly connected to the two support frames (7). A rotating plate (31) is arranged on the outer side of the end of the fixed shaft (3), and the middle part of the rotating plate (31) is movably sleeved on the outer side of the fixed shaft (3), and the connecting column (5) is fixed between one end of the two rotating plates (31).

3. A sliver breaking machine for yarn production according to claim 2, characterized in that: A conveying roller (4) is fixed between the other ends of the two rotating plates (31); the conveying roller (4) and the connecting column (5) are centrally symmetrically distributed around the fixed axis (3); the conveying roller (4) rotates around the fixed axis (3) and presses on the surface of the cotton strip (8); and a motor for driving the conveying roller (4) to rotate is arranged at one end.

4. A sliver breaking machine for yarn production according to claim 3, characterized in that: A driving assembly (6) is provided at one end of the connecting column (5), and the driving assembly (6) comprises a hollow cylinder (61), and telescopic rods (62) are movably inserted into the inner cavities at both ends of the hollow cylinder (61), and a connecting sleeve (63) is fixed at one end of the telescopic rod (62). A connecting shaft (33) is fixed on the surface of the rotating plate (31), and the two connecting sleeves (63) are movably sleeved on the outside of the connecting shaft (33) at corresponding positions.

5. A sliver breaking machine for yarn production according to claim 4, characterized in that: A driving block (64) is fixed on the outside of the hollow cylinder (61), and a driving screw (65) is movably penetrated and connected to the middle of the driving block (64) through a thread, and the driving screw (65) is driven to rotate by a motor. Guide columns (68) are provided on the outside of both ends of the hollow cylinder (61) to guide the hollow cylinder (61).

6. A sliver breaking machine for yarn production according to claim 5, characterized in that: The upper and lower ends of the driving screw rod (65) are respectively provided with a top plate (66) and a bottom plate (67); the upper and lower ends of the guide column (68) are respectively fixedly connected to the top plate (66) and the bottom plate (67); and the two ends of the bottom plate (67) are respectively fixed to the supporting frames (7) outside the two conveying frames (1).

7. A sliver breaking machine for yarn production according to claim 2, characterized in that: A shaft sleeve (32) is fixedly provided through the middle of the rotating plate (31), and the shaft sleeve (32) is movably sleeved on the outer side of the end of the fixed shaft (3).

8. A sliver breaking machine for yarn production according to claim 7, characterized in that: A limiting notch (321) is provided at one end of the shaft sleeve (32), and the central angle of the limiting notch (321) is less than one hundred and eighty degrees. A limiting stopper (322) is provided in the inner cavity of the limiting notch (321), and the limiting stopper (322) is fixed to the surface of the fixed shaft (3).

9. A sliver breaking machine for yarn production according to claim 1, characterized in that: The needle (52) is formed by cutting a tooth groove at the edge of the arc-shaped clamping plate (51), the end of the needle (52) is a pointed structure, a pressing platform (53) is fixed in the middle of the inner side wall of the needle (52), and the edge of the pressing platform (53) is aligned with the root of the needle (52).

10. A sliver breaking machine for yarn production according to claim 1, characterized in that: The tooth width of the sawtooth groove (21) is greater than the width of the needle (52), and the width of the needle (52) is less than the distance between two adjacent needles (52). When the connecting column (5) rotates around the fixed axis (3), the two groups of needles (52) cross each other and are misaligned.

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