Covering yarn drafting device
By adopting a front roller, middle roller, and rear roller structure in the core-spun yarn drafting device, combined with a liftable pressure roller and slider, the problem of insufficient clamping in existing devices is solved, and efficient drafting and stable transmission of yarn are achieved.
Patent Information
- Application Number
- CN202520153065.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-22
AI Technical Summary
The existing drafting device lacks an effective clamping mechanism, resulting in poor yarn drafting effect.
A core-spun yarn drafting device was designed, which adopts a front roller, middle roller and rear roller structure, equipped with liftable pressure rollers and sliders, and achieves synchronous rotation through gear transmission. The gap between the pressure rollers is adjusted by pressure blocks connected by springs and screws to form a clamping structure.
It improves the drafting effect of the yarn, ensures that the yarn can be effectively clamped during the drafting process, avoids mutual interference, and achieves synchronous adjustment and stable transmission.
Smart Images
Figure CN223705857U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drafting device technology, specifically to a drafting device for core-spun yarn. Background Technology
[0002] Drafting is the process of lengthening and thinning slivers, reducing their weight per unit length and making the fibers straighter and more parallel. In yarn production, it involves lengthening and thinning the fed roving or other semi-finished products through a drafting mechanism to achieve the desired yarn linear density. Drafting devices include rollers at different speeds. The rear roller grips the fed sliver and conveys it at a certain speed. The front roller is faster than the rear roller, and the middle roller's speed is between the two. The sliver is stretched under the grip of the rollers and the speed difference. Existing drafting devices use one gear to drive three meshing gears, and the speed of the roller synchronized with the three gears is determined by setting the gear size. However, this mechanism lacks a gripping and clamping mechanism, resulting in relatively poor yarn drafting effect. Therefore, this invention provides a core-spun yarn drafting device. Utility Model Content
[0003] The purpose of this invention is to provide a core-spun yarn drafting device.
[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows:
[0005] A core-spun yarn drafting device includes: a base; columns are provided on the base; the number of columns is four, arranged in a matrix, and two of the columns are provided with fixed plates fixedly connected to their sides away from the other two columns; a front roller, a middle roller and a rear roller of the same size are provided between the two fixed plates.
[0006] The front roller and the rear roller are at the same horizontal height; the middle roller is disposed between the front roller and the rear roller, and is located above both of them; a first gear, a second gear, and a third gear with successively decreasing diameters are respectively sleeved on the front roller shaft, the middle roller shaft, and the rear roller shaft; the first gear, the second gear, and the third gear are located in the same plane, and a fourth gear is disposed between them and meshes with all three; the fourth gear is connected to a first drive motor disposed on the fixed plate.
[0007] A first pressure roller is provided above the middle roller, which can abut against it; a second pressure roller and a third pressure roller are provided below the front roller and the rear roller, which can abut against them; both ends of the first pressure roller shaft, the second pressure roller shaft and the third pressure roller shaft are provided with sliders; the sliders are slidably engaged in the grooves provided above and below the fixed plate;
[0008] A pressure block is provided between the two columns; there are two pressure blocks, and their two ends are respectively slidably engaged with sliding grooves opened on the side of the columns; one pressure block is located above the slider at the end of the first pressure roller shaft and is elastically connected to the slider by a spring; the other pressure block is located below the slider at the end of the second pressure roller shaft and also below the slider at the end of the third pressure roller shaft, and is elastically connected to both sliders by a spring;
[0009] A lead screw is provided in the sliding groove; the lead screw has two sets of reverse threads, which respectively engage with the upper and lower pressure blocks; one end of the lead screw is connected to a second drive motor mounted on the column.
[0010] Based on the above scheme and as a preferred embodiment of the above scheme, the front roller, the middle roller and the rear roller have the same structure, and each of them has grooves evenly distributed along their axial direction on their outer surface; the first pressure roller, the second pressure roller and the third pressure roller have the same structure, and each of them has protrusions evenly distributed along their axial direction on their outer wall; the protrusions are adapted to the grooves.
[0011] Based on the above scheme and as a preferred embodiment of the above scheme, the two sides of the middle roller are respectively in the same plane as the side of the front roller and the side of the rear roller, so that the yarn is conveyed in a vertical state.
[0012] Based on the above scheme and as a preferred embodiment of the above scheme, guide rollers are provided between the columns; there are two guide rollers, which are respectively provided on the side of the front roller away from the middle roller and on the side of the rear roller away from the middle roller; and the guide rollers are located above the front roller and the rear roller.
[0013] Based on the above scheme and as a preferred embodiment of the above scheme, the side of the guide roller is in the same plane as the side of the front roller or the side of the rear roller, so that the yarn is conveyed in a vertical state.
[0014] The beneficial effects of this utility model are as follows: This utility model has pressure rollers that abut against the front roller and the rear roller and the middle roller. The pressure rollers interact with the front roller, the middle roller and the rear roller to form a clamping structure, which can clamp the drafted core-spun yarn and improve the yarn drafting effect. At the same time, sliders are provided at both ends of the pressure rollers. The sliders are connected to the pressure blocks. Driven by the pressure blocks, the synchronous lifting and lowering of each pressure roller can be realized, and the gap between the pressure rollers and the three rollers can be adjusted at the same time. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the arrangement of the rollers in this utility model.
[0017] Figure 3 This is a schematic diagram of the drawing roller structure of this utility model.
[0018] Figure 4 This is a schematic diagram of the pressure roller and some of its structures according to this utility model.
[0019] In the diagram: 1. Base; 2. Column; 3. Fixing plate; 4. Front roller; 5. Middle roller; 6. Rear roller; 7. First gear; 8. Second gear; 9. Third gear; 10. Fourth gear; 11. First drive motor; 12. First pressure roller; 13. Second pressure roller; 14. Third pressure roller; 15. Slider; 16. Slide groove; 17. Pressure block; 18. Spring; 19. Second drive motor; 20. Groove; 21. Protrusion; 22. Guide roller. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0021] like Figure 1 As shown, a core-spun yarn drafting device includes: a base 1, on which columns 2 are mounted. There are four columns 2 arranged in a matrix, and two columns 2 have fixed plates 3 fixedly connected to their sides away from the other two columns 2. A front roller 4, a middle roller 5, and a rear roller 6 of identical size and structure are arranged between the two fixed plates 3.
[0022] like Figure 2 As shown, the front roller 4 and the rear roller 6 are at the same horizontal height, and the middle roller 5 is set between the front roller 4 and the rear roller 6 and above them. At the same time, the top edges of both sides of the middle roller 5 are in the same plane as the top edges of the sides of the front roller 4 and the rear roller 6, respectively, so that the yarn is conveyed in a vertical state.
[0023] like Figure 3 As shown, a first gear 7, a second gear 8, and a third gear 9 with successively decreasing diameters are respectively mounted on the shafts of the front roller 4, the middle roller 5, and the rear roller 6. The first gear 7, the second gear 8, and the third gear 9 are located in the same plane, and a fourth gear 10 meshes with all three. The fourth gear 10 is connected to a first drive motor 11 mounted on the fixed plate 3. The first drive motor 11 drives the fourth gear 10 to rotate, which in turn drives the first gear 7, the second gear 8, and the third gear 9 to rotate synchronously in the same direction. Each gear, in turn, drives the corresponding roller to rotate, causing the front roller 4, the middle roller 5, and the rear roller 6 to rotate synchronously in the same direction. Due to the different sizes of the gears, the rear roller 6 rotates the fastest, followed by the middle roller 5, and the front roller 4 rotates the slowest.
[0024] like Figure 4As shown, a first pressure roller 12 is provided above the middle roller 5, which can abut against it, and a second pressure roller 13 and a third pressure roller 14 are provided below the front roller 4 and the rear roller 6, which can abut against them. The pressure rollers and each roller form a clamping structure, which can clamp the yarn and improve the drafting effect.
[0025] The first pressure roller 12 shaft, the second pressure roller 13 shaft, and the third pressure roller 14 shaft are all provided with sliders 15 at both ends. The sliders 15 are slidably fitted in the grooves 16 provided above and below the fixed plate 3 so that each pressure roller can be raised and lowered.
[0026] Two pressure blocks 17 are provided between the two columns 2, arranged vertically, with their ends slidingly engaged in sliding grooves on the sides of the columns 2. One pressure block 17 is located above the slider 15 at the end of the first pressure roller 12 shaft and is elastically connected to the slider 15 by a spring 18. The other pressure block 17 is located below the slider 15 at the end of the second pressure roller 13 shaft and also below the slider 15 at the end of the third pressure roller 14 shaft, and is elastically connected to both sliders 15 by a spring 18.
[0027] A lead screw is installed within the sliding groove, and the lead screw has two sets of reverse threads, which respectively engage with the upper and lower pressure blocks 17. One end of the lead screw is connected to a second drive motor 19 mounted on the column 2. The second drive motor 19 drives the lead screw to rotate, which in turn causes the upper and lower pressure blocks 17 to move closer or further apart. The pressure blocks 17 then move the slider 15, which in turn moves the pressure rollers up and down, thus achieving synchronous adjustment of the spacing between the three sets of upper rollers.
[0028] Preferably, the front roller 4, middle roller 5, and rear roller 6 have identical structures, each with grooves 20 evenly distributed along their axial direction on its exterior. The first pressure roller 12, second pressure roller 13, and third pressure roller 14 have identical structures, each with protrusions 21 evenly distributed along their axial direction on its outer wall. The protrusions 21 are adapted to fit the grooves 20. The grooves 20 allow for the separate transmission of several yarns, avoiding mutual interference, while the protrusions 21 improve the fit between the two rollers.
[0029] Furthermore, guide rollers 22 are provided between the columns 2. There are two guide rollers 22, one on the side of the front roller 4 away from the middle roller 5 and the other on the side of the rear roller 6 away from the middle roller 5. The guide rollers 22 are positioned above the front roller 4 and the rear roller 6. The guide rollers 22 are used to guide the yarn into the drafting rollers. Preferably, the top edge of the side of the guide roller 22 is in the same plane as the top edge of the side of the front roller 4 or the top edge of the side of the rear roller 6, so that the yarn is conveyed vertically.
[0030] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A core-spun yarn drafting device, characterized in that, include: A base (1); a column (2) is provided on the base (1); there are four columns (2) arranged in a matrix, and two columns (2) are provided with a fixing plate (3) fixedly connected to the side away from the other two columns (2); a front roller (4), a middle roller (5) and a rear roller (6) of the same size are provided between the two fixing plates (3); The front roller (4) and the rear roller (6) are at the same horizontal height; the middle roller (5) is located between the front roller (4) and the rear roller (6) and above them; the shafts of the front roller (4), the middle roller (5) and the rear roller (6) are respectively fitted with a first gear (7), a second gear (8) and a third gear (9) with decreasing diameters; the first gear (7), the second gear (8) and the third gear (9) are located in the same plane, and a fourth gear (10) is provided between them and meshes with all three; the fourth gear (10) is connected to the first drive motor (11) provided on the fixed plate (3); A first pressure roller (12) is provided above the middle roller (5) and can abut against it; a second pressure roller (13) and a third pressure roller (14) are provided below the front roller (4) and the rear roller (6) and can abut against them; both ends of the shaft of the first pressure roller (12), the shaft of the second pressure roller (13) and the shaft of the third pressure roller (14) are provided with sliders (15); the sliders (15) are slidably fitted in the grooves (16) provided above and below the fixed plate (3); A pressure block (17) is provided between the two columns (2); there are two pressure blocks (17), and their two ends are respectively slidably engaged with sliding grooves opened on the side of the column (2); one pressure block (17) is located above the slider (15) at the end of the shaft of the first pressure roller (12), and is elastically connected to the slider (15) by a spring (18); the other pressure block (17) is located below the slider (15) at the end of the shaft of the second pressure roller (13), and is also located below the slider (15) at the end of the shaft of the third pressure roller (14), and is elastically connected to both sliders (15) by a spring (18); A lead screw is provided in the sliding groove; the lead screw has two sets of reverse threads, which are respectively threaded with the upper and lower pressure blocks (17); one end of the lead screw is connected to the second drive motor (19) provided on the column (2).
2. The core-spun yarn drafting device according to claim 1, characterized in that, The front roller (4), the middle roller (5), and the rear roller (6) have the same structure, and each has grooves (20) evenly distributed along its axial direction on its exterior. The first pressure roller (12), the second pressure roller (13), and the third pressure roller (14) have the same structure, and each has protrusions (21) evenly distributed along its axial direction on its outer wall. The protrusions (21) are adapted to the grooves (20).
3. The core-spun yarn drafting device according to claim 1, characterized in that, The two sides of the middle roller (5) are respectively in the same plane as the side of the front roller (4) and the side of the rear roller (6) so that the yarn is conveyed in a vertical state.
4. The core-spun yarn drafting device according to claim 1, characterized in that, Guide rollers (22) are provided between the columns (2); there are two guide rollers (22), which are respectively provided on the side of the front roller (4) away from the middle roller (5) and on the side of the rear roller (6) away from the middle roller (5); and the guide rollers (22) are located above the front roller (4) and the rear roller (6).
5. A core-spun yarn drafting device according to claim 4, characterized in that, The side of the guide roller (22) is in the same plane as the side of the front roller (4) or the side of the rear roller (6) so that the yarn is conveyed in a vertical state.