A single spindle thread take-up mechanism for an automatic splicing rotor spinning machine

Abstract

The application discloses a single-spindle yarn guiding mechanism suitable for an automatic joint type rotor spinning machine, which comprises a mounting plate, a yarn guiding motor is mounted at one end of the mounting plate, a yarn guiding roller is mounted on an output shaft of the yarn guiding motor, a supporting shaft is mounted at a position corresponding to the yarn guiding motor on the mounting plate, the supporting shaft is rotationally connected with a shaft sleeve, the shaft sleeve is press-fitted at one end of a yarn guiding lever, a torsional spring is connected with the shaft sleeve, a skin roller shaft is mounted at a position corresponding to the shaft sleeve on the yarn guiding lever, a yarn guiding skin roller is rotationally connected at one end of the skin roller shaft, a lifting cylinder is arranged between the other end of the mounting plate and the yarn guiding lever, an output end of the lifting cylinder is hinged to a cylinder rotating shaft, and the cylinder rotating shaft is mounted at the other end of the mounting plate. The single-spindle yarn guiding structure is adopted to replace the traditional yarn guiding mode, the original single-motor single-yarn shaft driving is replaced by the single-spindle single-motor single-yarn mode, the yarn joint can be accurately controlled, the reversed yarn storage amount and the acceleration process are improved, and the yarn joint success rate is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of rotor spinning machine technology, and more specifically, to a single-spindle yarn feeding mechanism suitable for automatic splicing rotor spinning machines. Background Technology

[0002] During spinning in a rotor spinning machine, the lead-in roller and the lead-in slip roller contact each other to form the lead-in mechanism, which clamps and pulls the yarn that has been condensed and twisted in the rotor out of the spinning machine. Then, the winding roller drives the yarn bobbin to clamp the wound yarn. The lead-in roller is driven to rotate continuously by a mechanism that is always in a rotating state. The lead-in slip roller is driven to rotate because it is in contact with the lead-in roller. The lead-in slip roller and the lead-in roller rotate simultaneously to clamp and pull the yarn. The lead-in mechanism directly affects the yarn pulling, and the stability and quality of the lead-in directly affect the final quality of the product.

[0003] As the level of intelligence in rotor spinning machines continues to increase, traditional yarn feeding structures are no longer suitable for automatic splicing rotor spinning machines because they require manual assistance to lift the yarn feeding roller and lack an automatic yarn guide surface between the yarn feeding roller and the yarn feeding roller. Therefore, a new solution is needed to address these issues. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a single-spindle yarn feeding mechanism suitable for automatic joint type rotor spinning machines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A single-spindle yarn feeding mechanism suitable for an automatic joint-type rotor spinning machine includes a mounting plate. A yarn feeding motor is mounted on one end of the mounting plate, and a yarn feeding roller is mounted on the output shaft of the yarn feeding motor. A support shaft is mounted on the mounting plate at the position corresponding to the yarn feeding motor. A bushing is rotatably connected to the support shaft, and the bushing is press-fitted onto one end of a yarn feeding lever. A torsion spring is sleeved on the support shaft. One end of the torsion spring is fastened into an elongated hole in the mounting plate, and the other end of the torsion spring is connected to the yarn feeding lever. A roller shaft is mounted on the yarn feeding lever at the position corresponding to the bushing, and a yarn feeding roller is rotatably connected to one end of the roller shaft. A lifting cylinder is provided between the other end of the mounting plate and the yarn feeding lever. The end of the lifting cylinder is hinged to the yarn feeding lever, and the output end of the lifting cylinder is hinged to a cylinder rotation shaft, which is mounted on the other end of the mounting plate.

[0007] Furthermore, a roller limiter is rotatably connected to the other end of the roller shaft. The roller limiter rotates to abut one end against the housing of the yarn feeding motor, thereby separating the yarn feeding roller and the yarn feeding roller.

[0008] Furthermore, the roller limiter has a mounting hole for the roller shaft to pass through. The roller limiter has multiple arc-shaped locking blocks around the mounting hole. The roller shaft has multiple arc-shaped slots corresponding to the positions of the arc-shaped locking blocks. The length of the arc-shaped slots is greater than the length of the arc-shaped locking blocks. The roller limiter is connected to the roller shaft through the locking fit of the arc-shaped locking blocks and the arc-shaped slots, and is rotatably connected to the roller shaft by the movement of the arc-shaped locking blocks along the arc-shaped slots.

[0009] Furthermore, a guide wire is installed at the position of the yarn guide lever corresponding to the yarn guide roller, and the guide wire is limited by the limiting boss on the yarn guide lever.

[0010] Furthermore, one end of the roller shaft is provided with a ball head, which is fastened with a snap fastener for limiting the position of the yarn feeding roller.

[0011] Furthermore, a yarn guide head is installed at the other end of the yarn guide lever, and a yarn guide head insert is installed at the end of the yarn guide head, with a sliding groove provided on the yarn guide head insert.

[0012] Furthermore, a limiting bolt is installed at the end of the support shaft, and a washer and a retaining ring are provided between the limiting bolt and the support shaft, with the washer and retaining ring sleeved on the limiting bolt.

[0013] The beneficial effects of this invention are:

[0014] 1. This invention replaces the traditional yarn feeding method with a single-spindle yarn feeding structure. The original single-motor single-yarn-feeding shaft is replaced with a single-spindle single-motor single-yarn-feeding method, which can precisely control the reverse yarn storage amount and acceleration process of the yarn splice, thus greatly improving the success rate of yarn splicing. When combined with other automatic splicing components, the shape and quality of the yarn splice can be kept highly consistent.

[0015] 2. This invention features automatic roller lifting and automatic yarn feeding functions, eliminating the need for manual intervention in yarn splicing except in the event of equipment malfunction.

[0016] 3. This invention integrates and installs all the components in the entire yarn feeding mechanism to form an integrated structure. The whole relies on the mounting plate as the main body, making the entire yarn feeding mechanism a separate module, which has better integrity and is conducive to installation, maintenance and repair.

[0017] 4. When the rotor spinning machine is stopped for a long time, the present invention uses a roller limiter to provide roller lifting limit protection, so as to prevent stress deformation of the yarn guide roller and cause additional losses.

[0018] 5. The yarn guide head of this invention adopts a partial ceramic component structure, which can both meet the usage requirements and save costs. Attached Figure Description

[0019] Figure 1This is a schematic diagram of a single-spindle yarn feeding mechanism applicable to an automatic joint type rotor spinning machine in this embodiment;

[0020] Figure 2 This is a front view schematic diagram of a single-spindle yarn feeding mechanism applicable to an automatic joint type rotor spinning machine in this embodiment;

[0021] Figure 3 This is a right-side structural schematic diagram of a single-spindle yarn feeding mechanism applicable to an automatic joint type rotor spinning machine in this embodiment;

[0022] Figure 4 This is an exploded structural diagram of a single-spindle yarn feeding mechanism applicable to an automatic joint type rotor spinning machine in this embodiment;

[0023] Figure 5 This is a schematic diagram of one structure of the roller limiter in this embodiment.

[0024] Reference numerals: Mounting plate 1, long waist hole 101, positioning pin 102, yarn guiding motor 2, yarn guiding roller 3, support shaft 4, bushing 5, yarn guiding lever 6, limiting boss 601, torsion spring 7, roller shaft 8, ball head 801, snap fastener 802, yarn guiding roller 9, lifting cylinder 10, cylinder rotation shaft 11, roller limiter 12, mounting hole 1201, arc-shaped locking block 1202, yarn guiding wire 13, yarn guiding head 14, yarn guiding head insert 15, sliding groove 1501, limiting bolt 16, gasket 17, retaining ring 18, main beam 19, positioning hole 1901, fastening bolt 20. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example: A single-spindle yarn feeding mechanism suitable for an automatic joint-type rotor spinning machine, such as... Figures 1-5As shown, the assembly includes a mounting plate 1, which serves as the mounting carrier for all components in the yarn guiding mechanism. It is connected to the main beam 19 of the rotor spinning machine. A yarn guiding motor 2 is mounted on one end of the mounting plate 1, and a yarn guiding roller 3 is mounted on the output shaft of the yarn guiding motor 2. A support shaft 4 is mounted on the mounting plate 1 at the position corresponding to the yarn guiding motor 2. A bushing 5 is rotatably connected to the support shaft 4, meaning the bushing 5 is fitted onto the support shaft 4 and can rotate around the support shaft 4. The bushing 5 is press-fitted onto one end of the yarn guiding lever 6, and a torsion spring 7 is fitted onto the support shaft 4. The torsion spring 7 is located between the bushing 5 and the mounting plate 1. One end of the torsion spring 7 is fastened in the elongated hole 101 of the mounting plate 1, and the other end of the torsion spring 7 is connected to the yarn guiding lever 6. The yarn guiding lever 6 is equipped with a roller shaft 8 at the position corresponding to the bushing 5. One end of the roller shaft 8 is rotatably connected to the yarn guiding roller 9. A lifting cylinder 10 is provided between the other end of the mounting plate 1 and the yarn guiding lever 6. The end of the lifting cylinder 10 is hinged to the yarn guiding lever 6, and the output end of the lifting cylinder 10 is hinged to the cylinder rotating shaft 11. The cylinder rotating shaft 11 is installed at the other end of the mounting plate 1.

[0027] When the yarn breaks, such as Figure 2 As shown, when the lifting cylinder 10 is activated, the yarn guide lever 6 rotates upward around the support shaft 4 as the axis, causing the yarn guide roller 9 and the yarn guide roller 3 to separate, forming a channel for the yarn to slide in between the yarn guide roller 9 and the yarn guide roller 3. After the yarn splicing is completed, the yarn is slid into the space between the yarn guide roller 9 and the yarn guide roller 3 through the guide wire 13. Then, the lifting cylinder 10 drives its output end to retract, and the yarn guide lever 6 rotates downward around the support shaft 4 as the axis, causing the yarn guide roller 9 to touch the yarn guide roller 3, holding the yarn between the yarn guide roller 9 and the yarn guide roller 3.

[0028] In the contact drive between the yarn guide roller 3 and the yarn guide skin roller 9, the yarn guide roller 3 acts as the drive wheel, driven by the yarn guide motor 2. Driving the yarn guide roller 3 with the yarn guide motor 2 allows for precise control of the reverse yarn storage amount and acceleration process during yarn splicing, significantly improving the success rate of yarn splicing. Combined with other automatic splicing components, it ensures a high degree of consistency in the shape and quality of yarn splices. Furthermore, the yarn guide roller 3 and the yarn guide motor 2 together form a single-spindle yarn guide structure, which is an independent module that can be replaced and maintained without affecting the overall machine operation.

[0029] As a preferred option, such as Figure 1 and Figure 2 The top of the mounting plate 1 is provided with two positioning pins 102. When connecting to the main beam 19 of the rotor spinning machine, the two positioning pins 102 are first aligned with the two positioning holes 1901 on the main beam 19, and then connected by fastening bolts 20. The positioning pins 102 and positioning holes 1901 are used to ensure the installation accuracy of the entire structure, which is conducive to installation, maintenance and repair.

[0030] Furthermore, such as Figures 1-4 As shown, a roller limiter 12 is rotatably connected to the other end of the roller shaft 8. The roller limiter 12 can rotate around the roller shaft 8 at a certain angle. When the rotor spinning machine is stopped for a long time, the roller limiter 12 is rotated so that one end of it abuts against the housing of the yarn guiding motor 2, thereby separating the yarn guiding roller 9 and the yarn guiding roller 3 and preventing stress deformation of the yarn guiding roller 9.

[0031] Specifically, such as Figure 5 As shown, the roller limiter 12 has a mounting hole 1201 for the roller shaft 8 to pass through. The roller limiter 12 has multiple arc-shaped locking blocks 1202 around the mounting hole 1201. The roller shaft 8 has multiple arc-shaped slots (not shown) corresponding to the positions of the arc-shaped locking blocks 1202. The arc-shaped slots are adapted to the arc-shaped locking blocks 1202. When the roller limiter 12 is installed on the roller shaft 8, the roller limiter 12 and the roller shaft 8 are connected together to form a whole by the locking cooperation of the arc-shaped locking blocks 1202 and the arc-shaped slots. At the same time, since the length of the arc-shaped slot is greater than the length of the arc-shaped locking block 1202, the arc-shaped locking block 1202 can move along the arc-shaped slot. Meanwhile, the length of the arc-shaped slot limits the travel of the arc-shaped locking block 1202, so that the roller limiter 12 can rotate around the roller shaft 8 by a certain angle. Therefore, when the rotor spinning machine is stopped for a long time, the roller limiter 12 is rotated so that one end of it abuts against the housing of the yarn guiding motor 2, so that the yarn guiding roller 3 and the yarn guiding roller 9 are disengaged from the air.

[0032] Furthermore, such as Figures 1-4 As shown, a yarn guide wire 13 is installed at the position of the yarn guide lever 6 corresponding to the yarn guide roller 9. The yarn guide wire 13 is fixed to the yarn guide lever 6 by fastening bolts 20. The yarn guide wire 13 is used to automatically guide the yarn into the space between the yarn guide roller 3 and the yarn guide roller 9.

[0033] Preferably, the yarn guide lever 6 is provided with a limiting boss 601. By setting the limiting boss 601, on the one hand, the stability of the yarn guide wire 13 installation is improved, and on the other hand, the limiting boss 601 restricts the installation direction of the yarn guide wire 13, so that the yarn can be smoothly drawn into the space between the yarn guide roller 3 and the yarn guide skin roller 9.

[0034] Furthermore, one end of the roller shaft 8 is provided with a ball head 801, which is fastened with a male and female fastener 802. The male and female fastener 802 is used to limit the yarn feeding roller 9 and prevent the yarn feeding roller 9 from slipping out of the roller shaft 8.

[0035] Furthermore, a yarn guide head 14 is installed at the other end of the yarn guide lever 6, and a yarn guide head insert 15 is installed at the end of the yarn guide head 14. That is, the yarn guide head insert 15 is fixed to the yarn guide head 14 by self-tapping screws, and a sliding groove 1501 is opened on the yarn guide head insert 15. The yarn guide head insert 15 is used to limit the yarn, and when the lifting cylinder 10 drives the yarn guide lever 6 to rotate upward, the yarn is automatically drawn to the yarn guide wire 13, and then automatically drawn into the space between the yarn guide roller 3 and the yarn guide skin roller 9 via the yarn guide wire 13.

[0036] Preferably, the yarn guide head 14 is embedded in the yarn guide lever 6 and secured with self-tapping screws. This structure improves the stability of the connection between the yarn guide head 14 and the yarn guide lever 6, while also facilitating maintenance and replacement.

[0037] Preferably, the yarn guide insert 15 and the yarn guide 14 are provided with a positioning flat square structure at the mating position to limit the installation position of the yarn guide insert 15, thereby ensuring the accurate orientation of the sliding groove 1501 after installation.

[0038] Preferably, the yarn guide insert 15 is made of ceramic to prevent wear during yarn sliding; at the same time, only the yarn guide insert 15 is made of ceramic, that is, the partial ceramic structure of the yarn guide 14 is adopted to achieve the usage requirements and save costs.

[0039] Furthermore, a limiting bolt 16 is installed at the end of the support shaft 4, and a washer 17 and a retaining ring 18 are provided between the limiting bolt 16 and the support shaft 4. The washer 17 is located between the retaining ring 18 and the limiting bolt 16. By setting the limiting bolt 16, the washer 17 and the retaining ring 18, the bushing 5 and the yarn guide lever 6 are prevented from sliding out of the support shaft 4.

[0040] Furthermore, one end of the cylinder rotating shaft 11 is a bolt structure, which is fixed to the mounting plate 1 by a nut; the other end of the cylinder rotating shaft 11 is provided with a ball head, and the output end of the lifting cylinder 10 is equipped with a ball seat that matches the ball head. The ball head and the ball seat are combined to form a self-aligning ball head structure, which makes the lifting cylinder 10 flexible and reliable in operation.

[0041] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A single-spindle yarn feeding mechanism suitable for an automatic joint type rotor spinning machine, comprising a mounting plate (1), characterized in that, A yarn-feeding motor (2) is mounted on one end of the mounting plate (1). A yarn-feeding roller (3) is mounted on the output shaft of the yarn-feeding motor (2). A support shaft (4) is mounted on the mounting plate (1) at the position corresponding to the yarn-feeding motor (2). A bushing (5) is rotatably connected to the support shaft (4). The bushing (5) is press-fitted onto one end of the yarn-feeding lever (6). A torsion spring (7) is sleeved on the support shaft (4). One end of the torsion spring (7) is fastened into the elongated hole (101) of the mounting plate (1). The other end of the torsion spring (7) A yarn guide lever (6) is connected to the yarn guide lever (6), and a roller shaft (8) is installed at the position corresponding to the bushing (5). One end of the roller shaft (8) is rotatably connected to the yarn guide roller (9). A lifting cylinder (10) is provided between the other end of the mounting plate (1) and the yarn guide lever (6). The end of the lifting cylinder (10) is hinged to the yarn guide lever (6), and the output end of the lifting cylinder (10) is hinged to the cylinder rotating shaft (11). The cylinder rotating shaft (11) is installed at the other end of the mounting plate (1). The other end of the roller shaft (8) is rotatably connected to a roller limiter (12). The roller limiter (12) is rotated to abut one end against the housing of the yarn feeding motor (2) so that the yarn feeding roller (9) and the yarn feeding roller (3) are separated. The roller limiter (12) has an installation hole (1201) for the roller shaft (8) to pass through. The roller limiter (12) has multiple arc-shaped locking blocks (1202) circumferentially arranged along the installation hole (1201). The roller shaft (8) has multiple arc-shaped slots corresponding to the positions of the arc-shaped locking blocks (1202). The length of the arc-shaped slots is greater than the length of the arc-shaped locking blocks (1202). The roller limiter (12) is connected to the roller shaft (8) through the locking fit of the arc-shaped locking blocks (1202) and the arc-shaped slots, and is rotatably connected to the roller shaft (8) by moving the arc-shaped locking blocks (1202) along the arc-shaped slots. When the roller limiter (12) is installed on the roller shaft (8), the roller limiter (12) and the roller shaft (8) are connected together and formed as a whole by the interlocking of the arc-shaped locking block (1202) and the arc-shaped locking groove. Since the groove length of the arc-shaped locking groove is greater than the length of the arc-shaped locking block (1202), the arc-shaped locking block (1202) can move along and be restricted within the arc-shaped locking groove, so that the roller limiter (12) can rotate around the roller shaft (8) at a certain angle. When the rotor spinning machine is stopped for a long time, the roller limiter (12) is rotated so that one end of it abuts against the housing of the yarn guiding motor (2) so that the yarn guiding roller (3) and the yarn guiding roller (9) are disengaged from the air.

2. The single-spindle yarn feeding mechanism for an automatic joint-type rotor spinning machine according to claim 1, characterized in that, The yarn guide lever (6) is equipped with a yarn guide wire (13) at the position corresponding to the yarn guide roller (9), and the yarn guide wire (13) is limited by the limiting boss (601) on the yarn guide lever (6).

3. The single-spindle yarn feeding mechanism for an automatic joint-type rotor spinning machine according to claim 1, characterized in that, One end of the roller shaft (8) is provided with a ball head (801), and the ball head (801) is fastened with a male and female fastener (802) for limiting the yarn feeding roller (9).

4. The single-spindle yarn feeding mechanism for an automatic joint-type rotor spinning machine according to claim 1, characterized in that, The other end of the yarn guide lever (6) is equipped with a yarn guide head (14), and the end of the yarn guide head (14) is equipped with a yarn guide head insert (15), and the yarn guide head insert (15) is provided with a sliding groove (1501).

5. The single-spindle yarn feeding mechanism for an automatic joint-type rotor spinning machine according to claim 1, characterized in that, A limiting bolt (16) is installed at the end of the support shaft (4). A washer (17) and a retaining ring (18) are provided between the limiting bolt (16) and the support shaft (4). The washer (17) and the retaining ring (18) are sleeved on the limiting bolt (16).

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