Fiber material stretching device for spinning machine

Abstract

The utility model discloses a fiber material stretching device for a spinning machine, relates to the field of spinning machines, and aims to solve the technical problems that when a fiber material is stretched by an existing stretching device in the prior art, only a single fiber material line can be pulled, and a plurality of fiber material lines cannot be stretched at the same time; and the stretching efficiency of the fiber material line is improved. Supporting rollers are rotationally connected to the middle between the two supporting side plates and the front end and the rear end of the middle of the two supporting side plates, a plurality of semicircular-section annular spacing grooves are formed in the outer walls of the supporting rollers at equal intervals, a pressing roller is rotationally connected to the inner side of each C-shaped lifting frame, and a plurality of semicircular-section pressing rings are fixedly connected to the outer wall of each pressing roller at equal intervals. And through the arrangement of the semicircular-section annular space grooves and the semicircular-section pressing rings, multiple fiber material lines can be accurately clamped and stretched at the same time, and the problem that the fiber material line stretching efficiency is low due to the fact that a traditional device can only conduct single-line stretching is solved.

Description

Technical Field

[0001] This utility model relates to the field of spinning machines, specifically to a fiber material stretching device for spinning machines. Background Technology

[0002] A spinning machine is a textile machine that processes fibrous raw materials into yarn. It is mainly used to twist short fibers such as cotton, linen, wool, or chemical fibers into continuous yarn. According to the process, it can be divided into ring spinning, rotor spinning, and air-jet spinning. Among them, ring spinning machines use steel rings and travelers for twisting, resulting in high yarn strength; rotor spinning machines use high-speed airflow to form yarn, which is more efficient. Spinning machines use a stretching device to stretch and refine the fibers, and then the fibers are twisted together by spindles or rotors to form yarn.

[0003] For example, patent application CN 214992042 U discloses a polypropylene filament stretching device for a spinning machine, comprising a frame. Along the side of the frame, in the direction of filament conveying, are sequentially arranged a first differential roller group, a second differential roller group, a third differential roller group, a first insulation box, a fourth differential roller group, a second insulation box, and a fifth differential roller group. The first and second insulation boxes are fully enclosed box structures. The beneficial effects of this invention are: it achieves precise temperature control during the polypropylene filament stretching process, which is beneficial to the thermal motion of the polypropylene filament macromolecules, promoting orientation and crystallization, increasing the strength of the polypropylene filament, reducing its elongation, and simultaneously reducing the overall length of the production line.

[0004] The aforementioned stretching device can only stretch a single fiber thread when stretching fiber materials, and cannot stretch multiple fiber threads simultaneously, resulting in low stretching efficiency. Therefore, there is an urgent market need to develop a fiber stretching device for spinning machines to help solve the existing problems. Utility Model Content

[0005] The purpose of this invention is to provide a fiber material stretching device for a spinning machine, in order to solve the problem mentioned in the background art that the existing stretching device can only stretch a single fiber material thread and cannot stretch multiple fiber material threads at the same time, resulting in low stretching efficiency of the fiber material thread.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fiber material stretching device for a spinning machine, comprising two supporting side plates arranged in parallel. Support rollers are rotatably connected to the middle and both ends of the middle section between the two supporting side plates. Multiple semi-circular cross-section annular grooves are evenly spaced on the outer wall of each supporting roller. C-shaped fixing frames are fixedly connected to the middle and both ends of the upper middle section of the two supporting side plates. A C-shaped lifting frame is connected to the inner side of each C-shaped fixing frame. A pressing roller is rotatably connected to the inner side of each C-shaped lifting frame. Multiple semi-circular cross-section pressing rings are fixedly connected to the outer wall of each pressing roller at equal intervals. Fixed crossbars are jointly fixedly connected to the front and rear ends of the two supporting side plates. Multiple guide rings are evenly spaced on the upper ends of the two fixed crossbars.

[0007] Preferably, the three support rollers are vertically aligned with the three pressing rollers, and the multiple semi-circular cross-section annular grooves on the three support rollers are vertically aligned with the multiple semi-circular cross-section pressing rings on the upper three pressing rollers.

[0008] Preferably, a first rotating shaft is fixedly connected to the middle of the support roller, and a driving device is fixedly connected to the middle of the outer side of one side of the support side plate and both the front and rear ends. A variable frequency motor is fixedly connected inside the driving device.

[0009] Preferably, the rear ends of the three first rotating shafts extend into the interior of the three drive devices and are connected to the output shaft of the variable frequency motor via couplings.

[0010] Preferably, the pressing roller and the C-shaped lifting frame are rotatably connected via a second rotating shaft, and an electro-hydraulic rod is fixedly connected to the middle of the upper end of the C-shaped fixed frame. The telescopic end of the lower end of the electro-hydraulic rod passes through the C-shaped fixed frame and is fixedly connected to the middle of the upper end of the C-shaped lifting frame.

[0011] Preferably, guide tubes are fixedly connected to both sides and the front and rear ends inside the C-shaped fixing frame, and guide rods are fixedly connected to both sides and the front and rear ends of the upper end of the C-shaped lifting frame, with the upper ends of the four guide rods passing through the interior of the four guide tubes respectively.

[0012] Preferably, the upper end face of the fixed crossbar is provided with multiple rectangular slots at equal intervals, and the lower end of each guide ring is fixedly connected with a rectangular limiting part. The rectangular limiting part at the lower end of each guide ring is inserted into the multiple rectangular slots respectively, and the rectangular limiting part is fixedly connected to the fixed crossbar by screws.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, multiple independent fiber channels are formed by setting a semi-circular cross-section annular groove and a semi-circular cross-section clamping ring, which can simultaneously clamp and stretch multiple fiber material lines, solving the problem that the traditional device can only stretch a single line, resulting in low stretching efficiency of fiber material lines.

[0015] (2) In this utility model, the guide ring is set to achieve precise guidance and positioning of multiple fibers, effectively preventing fiber entanglement and crossing, making the stretching process more stable and reliable.

[0016] (3) In this utility model, the vertical lifting and lowering accuracy of the pressing roller is ensured by setting the guide rod. At the same time, the guide rod and the guide tube cooperate to ensure uniform pressing force and avoid fiber damage caused by uneven pressure. Attached Figure Description

[0017] Figure 1 This is a front view of a fiber material stretching device for a spinning machine according to the present invention.

[0018] Figure 2 This is a main sectional view of the support roller of this utility model;

[0019] Figure 3 This is a side sectional view of the tensioning device of this utility model;

[0020] Figure 4 This is a front sectional view of the fixed crossbar of this utility model.

[0021] In the diagram: 1. Support side plate; 2. Support roller; 201. Semi-circular cross-section annular groove; 202. First rotating shaft; 3. Drive device; 301. Variable frequency motor; 4. C-type fixing frame; 401. Electro-hydraulic rod; 402. Guide tube; 5. C-type lifting frame; 501. Guide rod; 502. Pressure roller; 503. Semi-circular cross-section pressure ring; 504. Second rotating shaft; 6. Fixed crossbar; 601. Rectangular slot; 7. Guide ring; 701. Rectangular limiting part; 702. Screw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4This utility model provides an embodiment of a fiber material stretching device for a spinning machine, comprising two parallel support side plates 1. Support rollers 2 are rotatably connected to the middle and both ends of the middle section between the two support side plates 1. Multiple semi-circular cross-section annular grooves 201 are evenly spaced on the outer wall of the support rollers 2. C-shaped fixing frames 4 are fixedly connected to the middle and both ends of the upper middle section of the two support side plates 1. A C-shaped lifting frame 5 is connected to the inner side of each C-shaped fixing frame 4. A pressing roller 502 is rotatably connected to the inner side of each C-shaped lifting frame 5. Multiple semi-circular cross-section pressing rings 503 are evenly spaced fixedly connected to the outer wall of the pressing roller 502. Three support rollers 2 are perpendicularly aligned with three pressing rollers 502. The multiple semi-circular cross-section annular grooves 201 on the three support rollers 2 are perpendicularly aligned with the multiple semi-circular cross-section pressing rings 503 on the three upper pressing rollers 502. Communication is maintained between the pressing rollers 502 and the C-shaped lifting frames 5. The second rotating shaft 504 is rotatably connected to the upper middle part of the C-shaped fixed frame 4, and the electro-hydraulic rod 401 is fixedly connected to the lower telescopic end of the electro-hydraulic rod 401 after passing through the C-shaped fixed frame 4. It is then fixedly connected to the upper middle part of the C-shaped lifting frame 5. Multiple fiber material lines are passed through the interior of multiple semi-circular cross-section annular grooves 201 on the three support rollers 2 to separate the fiber material lines. The electro-hydraulic rod 401 drives the C-shaped lifting frame 5 to descend, so that the semi-circular cross-section pressing ring 503 of the pressing roller 502 precisely meshes with the semi-circular cross-section annular groove 201 of the support roller 2. At the same time, after the semi-circular cross-section pressing ring 503 is inserted into the semi-circular cross-section annular groove 201, it presses and clamps the fiber material lines. The surface of the semi-circular cross-section pressing ring 503 and the inner wall of the semi-circular cross-section annular groove 201 are both provided with anti-slip coating. The support rollers 2 rotate at different speeds (the speed of the three support rollers 2 increases from front to back), and the speed difference is used to achieve synchronous stretching of multiple fiber material lines.

[0024] Please see Figure 3 and Figure 4 Both ends of the two supporting side plates 1 are fixedly connected to a fixed crossbar 6. Multiple guide rings 7 are connected at equal intervals on the upper end of the two fixed crossbars 6. Multiple rectangular slots 601 are provided at equal intervals on the upper surface of the fixed crossbars 6. A rectangular limiting part 701 is fixedly connected to the lower end of each guide ring 7. The rectangular limiting part 701 at the lower end of each guide ring 7 is inserted into the multiple rectangular slots 601 respectively. The rectangular limiting part 701 and the fixed crossbar 6 are fixedly connected by screws 702. Multiple fiber material lines first pass through the multiple guide rings 7 on the multiple front fixed crossbars 6 to perform preliminary positioning of the multiple fiber material lines. After passing through the multiple semi-circular cross-section annular grooves 201 on the three supporting rollers 2, the multiple fiber material lines exit from the multiple guide rings 7 on the rear fixed crossbar 6.

[0025] Please see Figure 2A first rotating shaft 202 is fixedly connected to the middle of the support roller 2. A drive device 3 is fixedly connected to the middle of the outer side of one side support plate 1 and both the front and rear ends. A variable frequency motor 301 is fixedly connected inside the drive device 3. The rear ends of the three first rotating shafts 202 extend into the three drive devices 3 respectively and are connected to the output shaft of the variable frequency motor 301 through a coupling. The three variable frequency motors 301 drive the four first rotating shafts 202 to rotate at different speeds, thereby causing the three first rotating shafts 202 to drive the three support rollers 2 to rotate at different speeds.

[0026] Please see Figure 2 The C-shaped fixed frame 4 has guide tubes 402 fixedly connected to both sides and the front and rear ends inside. The C-shaped lifting frame 5 has guide rods 501 fixedly connected to both sides and the front and rear ends on the upper end. The upper ends of the four guide rods 501 pass through the interior of the four guide tubes 402 respectively. When the C-shaped lifting frame 5 is raised or lowered, it is guided by sliding along the guide tubes 402 through the guide rods 501.

[0027] Working Principle: In operation, multiple fiber materials are initially positioned by passing them sequentially through the guide ring 7 on the front fixed crossbar 6, and then introduced into the semi-circular cross-section annular grooves 201 of the three sets of support rollers 2. The electro-hydraulic rod 401 is activated to push the C-shaped lifting frame 5 downwards, causing the semi-circular cross-section pressing ring 503 of the pressing roller 502 to precisely engage with the semi-circular cross-section annular grooves 201 of the support rollers 2, forming independent fiber channels. Three sets of variable frequency motors 301 drive the support rollers 2 to rotate differentially via the first rotating shaft 202, achieving stepped stretching through the speed difference. The fibers are stably conveyed between the anti-slip coated support rollers 2 and then discharged through the rear guide ring 7.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fiber material stretching device for a spinning machine, comprising a support side plate (1), characterized in that: Two support side plates (1) are arranged in parallel. Support rollers (2) are rotatably connected to the middle and the front and rear ends of the middle between the two support side plates (1). Multiple semi-circular cross-section annular grooves (201) are evenly spaced on the outer wall of the support rollers (2). C-shaped fixing frames (4) are fixedly connected to the middle of the upper end of the two support side plates (1) and the front and rear ends of the upper middle. C-shaped lifting frames (5) are connected to the inner side of each C-shaped fixing frame (4). Pressing rollers (502) are rotatably connected to the inner side of each C-shaped lifting frame (5). Multiple semi-circular cross-section pressing rings (503) are fixedly connected to the outer wall of the pressing rollers (502) at equal intervals. Fixed crossbars (6) are fixedly connected to the front and rear ends of the two support side plates (1). Multiple guide rings (7) are evenly spaced on the upper ends of the two fixed crossbars (6).

2. The fiber stretching device for a spinning machine according to claim 1, characterized in that: The three support rollers (2) are vertically aligned with the three pressing rollers (502), and the multiple semi-circular cross-section annular grooves (201) on the three support rollers (2) are vertically aligned with the multiple semi-circular cross-section pressing rings (503) on the upper three pressing rollers (502).

3. The fiber stretching device for a spinning machine according to claim 1, characterized in that: The first rotating shaft (202) is fixedly connected to the middle of the support roller (2), and the drive device (3) is fixedly connected to the middle of the outer side of the support side plate (1) and the front and rear ends. The variable frequency motor (301) is fixedly connected inside the drive device (3).

4. A fiber material stretching device for a spinning machine according to claim 3, characterized in that: The rear ends of the three first rotating shafts (202) extend into the interior of the three drive devices (3) and are connected to the output shaft of the variable frequency motor (301) via couplings.

5. A fiber stretching device for a spinning machine according to claim 1, characterized in that: The pressing roller (502) and the C-shaped lifting frame (5) are rotatably connected through the second rotating shaft (504). An electro-hydraulic rod (401) is fixedly connected to the middle of the upper end of the C-shaped fixed frame (4). The telescopic end of the lower end of the electro-hydraulic rod (401) passes through the C-shaped fixed frame (4) and is fixedly connected to the middle of the upper end of the C-shaped lifting frame (5).

6. A fiber stretching device for a spinning machine according to claim 1, characterized in that: The C-shaped fixing frame (4) has guide tubes (402) fixedly connected to both sides and the front and rear ends inside. The C-shaped lifting frame (5) has guide rods (501) fixedly connected to both sides and the front and rear ends on the upper end. The upper ends of the four guide rods (501) pass through the interior of the four guide tubes (402).

7. A fiber stretching device for a spinning machine according to claim 1, characterized in that: The upper end face of the fixed crossbar (6) is provided with multiple rectangular slots (601) at equal intervals. Each guide ring (7) is fixedly connected to a rectangular limiting part (701) at its lower end. The rectangular limiting part (701) at the lower end of each guide ring (7) is inserted into the multiple rectangular slots (601). The rectangular limiting part (701) and the fixed crossbar (6) are fixedly connected by screws (702).

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