Textile machinery tension rake device with controllable tension

Abstract

The utility model provides a textile machinery tension rake device with controllable tension, which relates to the technical field of textile machinery and comprises a tension mechanism, the tension mechanism comprises a rake body part, a non-return part and a cavity, the rake body part is arranged in the cavity in a sliding manner, the non-return part is connected onto the rake body part through an elastic piece, and the cavity is connected with the rake body part. The non-return part slides in the cavity, and the multiple tension mechanisms are transversely arranged. The elastic piece applies pressure to the rake body part, the sliding distance of the non-return part is used for controlling the pulling force, when the external force acting on the shaft pressing motion of the pressure control mechanism disappears, the non-return ratchet and the trapezoidal tooth are meshed with each other to prevent the non-return part of the rake from returning, and the pulling force is kept; the downward pulling force of the rake non-return part on the rake body part is reduced due to the downward movement of the fabric, the pressure control mechanism does work again and circulates in this way, and the rake downwards pulls the fabric to a designated position and then the required rake is selected by the ascending selection mechanism to ascend as a cycle.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery technology, specifically a textile machinery pull rake device with controllable pulling force. Background Technology

[0002] In the textile production process, textile tensioning equipment, as a crucial actuator in textile machinery, plays a key role in generating tension and forming loops in the fabric. Currently, mainstream computerized flat knitting machines primarily utilize rollers for tensioning; however, while generating tension, the rollers also share the tension of the fabric between the front and back needle beds. With the gradual maturation of one-piece molding technology, the need for independent control of the tension of the fabric between the front and back needle beds is becoming increasingly prominent. Traditional roller tensioning equipment can no longer meet this requirement. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, this utility model provides a textile machinery tension rake device with controllable tension, which is more suitable for the integration of the one-piece molding process and can effectively control the independent tension of the needle bed.

[0004] This utility model provides a textile machinery pulling rake device with controllable pulling force, characterized in that it includes a pulling mechanism, the pulling mechanism including a rake body part, a check part and a chamber, the rake body part is slidably disposed in the chamber, the check part is connected to the rake body part by an elastic element, the check part slides inside the chamber, and the pulling mechanism is provided in a plurality of uniformly transversely arranged.

[0005] A preferred technical solution further includes a pressure control mechanism, which includes a fixed end plate. A rotating shaft is rotatably disposed between the fixed end plates. An inner ring is fixedly disposed at both ends of the rotating shaft. An inner and outer toothed ring is rotatably disposed on the outer side of the inner ring. An outer ring is rotatably disposed on the outer side of the inner and outer toothed rings. An inner ratchet is fixedly disposed on the outer side of the inner ring. An outer ratchet is disposed on the inner side of the outer ring. The inner and outer ratchets respectively engage with the inner and outer teeth of the inner and outer toothed rings, so that when the inner ring rotates, the inner and outer toothed rings can only rotate in one direction on the inner side of the outer ring. An internal gear is fixedly disposed at the end of the rotating shaft and corresponding to the inner side of the inner and outer toothed rings. An external gear meshes between the internal gear and the inner teeth of the inner and outer toothed rings. A pressure shaft is fixedly disposed between the external gears at both ends of the rotating shaft. The pressure shaft engages with a check valve.

[0006] In a preferred embodiment, one end of the chamber is a circular groove, and the other end of the chamber is a tangential groove. The tangential groove is in the tangential direction upward from the circular groove. The rake body includes several arc-shaped blocks and square blocks. The arc-shaped blocks are hinged end to end. The square blocks are hinged to the outermost side of the sequentially hinged arc-shaped blocks. A rake hook is provided on the outer end of the square blocks. The square blocks slide up and down in the tangential groove. The arc-shaped blocks slide between the circular groove and the tangential groove. A pressure block is fixedly provided on the inner end of the arc-shaped block (1101) by an arc-shaped strip.

[0007] In a preferred embodiment, the check valve includes a check valve slider slidably disposed within a circular groove. A check valve ratchet is hinged to the check valve slider. Trapezoidal teeth are evenly arranged on the inner side of the circular groove, and the check valve ratchet engages with the trapezoidal teeth.

[0008] In a preferred embodiment, the arc-shaped strip is slidably connected to the check slider, the pressure block is located on the inner end of the check slider, the outer end of the check slider is hinged with a pressure tooth, a guide rod is provided on the pressure tooth, the inner end of the arc-shaped block is provided with an arc-shaped guide groove, the guide rod is slidably disposed in the arc-shaped guide groove, the elastic element is connected to the pressure block and applies a force to the inner end of the pressure block, the pressure shaft cooperates with the pressure tooth, and when the pressure shaft revolves around the axis of the rotating shaft, the pressure shaft drives the check slider to slide in the circular groove by pushing the pressure tooth.

[0009] In a preferred embodiment, the elastic element is a compression spring, which is fixedly disposed between the pressure block and the check slider.

[0010] In a preferred embodiment, an arc-shaped guide rod is fixedly provided on the inner end of the anti-return slider, the arc-shaped guide rod is slidably connected to the pressure block, and the elastic element is located on the outer side of the arc-shaped guide rod.

[0011] In a preferred embodiment, the pressure shaft is flat.

[0012] A preferred technical solution further includes a lifting selection mechanism, which includes swing arms fixedly mounted at both ends of a rotating shaft. A rotating shaft is rotatably mounted between the outer ends and inner sides of the swing arms. The rotating shaft is provided with a set of pushing teeth corresponding to each chamber. Each set of pushing teeth includes multiple pushing teeth, with the pushing teeth of each set evenly arranged around the rotating shaft. Rotating teeth are provided at both ends of the rotating shaft, and the swing arms are provided with positioning elements that cooperate with the rotating teeth. The fixed end plate is also arranged around the rotating shaft. Multiple stops are provided, each stop having a rotation angle on the fixed end plate, and a return spring is provided at the rotational connection between the stop and the fixed end plate. When the anti-return part slides towards the inner side of the cavity, the rotating shaft drives the rotating teeth to revolve around the rotating shaft via the swing arm. The rotating teeth touch the stops, causing the rotating teeth to rotate around the rotating shaft by a certain angle. Arc-shaped grooves are provided on the outer side of the cavity and at the positions corresponding to the push tooth assembly. The push teeth on the push tooth assembly that are close to the cavity extend into the cavity through the arc-shaped grooves, and the push teeth that extend into the cavity slide in a sliding connection with the arc-shaped grooves.

[0013] In a preferred embodiment, the positioning element is a positioning plate, which is rotatably mounted on the swing arm.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] Precise and adjustable tension control

[0016] 1. Dynamic Pressure Adjustment: Through the coordinated action of the rotating shaft, inner and outer toothed rings, and pressure shaft in the pressure control mechanism, precise control of the pressure shaft on the check valve section can be achieved. When the rotating shaft rotates, the pressure shaft pushes the check valve slider through the pressure teeth, and the elastic element then provides pressure to the rake body. Furthermore, the rotation of the pressure shaft can adjust its relative angle with the rotating shaft, thereby finely adjusting the tension to adapt to the tension requirements of different fabrics.

[0017] Continuous and stable tension: The elasticity of the elastic element 14 enables the rake body to automatically adjust its position when the fabric length changes. At the same time, the engagement of the anti-return ratchet and the trapezoidal teeth prevents the tension from returning, ensuring the continuity and stability of the tension output.

[0018] 2. Multi-rake collaboration and independent control

[0019] Lateral arrangement design: Multiple tensioning mechanisms are evenly arranged laterally, which can control multiple rake bodies at the same time, improving textile efficiency.

[0020] Selective Lifting Control: The lifting selection mechanism allows for precise selection of a specific rake for lifting operations. The push teeth assembly on the rotating shaft cooperates with the stop block, combined with the locking function of the positioning component, to achieve the disengagement of the push teeth from the anti-return ratchet of the target rake and the pushing of the rake body, meeting the requirements for independent rake control in one-piece molding processes.

[0021] 3. Adaptability and process compatibility

[0022] Wide range of adjustable tension: Through the cooperation of the pressure control mechanism and the check valve, the tension can be linearly adjusted according to the position of the check valve slider to meet the tension requirements of different fabrics.

[0023] One-piece molding process support: The rising selection mechanism allows for independent control of the rake body's rise, which is highly compatible with the complex structure weaving requirements in the one-piece molding process, improving process flexibility. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of this utility model after removing part of the tension mechanism;

[0026] Figure 3 This is a schematic diagram of the rake body and the cavity assembly structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the cooperative structure of the pressure control mechanism and the lifting selection mechanism of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the selected mechanism in this utility model;

[0029] Figure 6 This is a schematic diagram of the mating structure of the rotating shaft, the pushing gear assembly, and the rotating gear of this utility model;

[0030] Figure 7 This is a schematic diagram of the cooperation structure between the anti-return part and the rake body of this utility model;

[0031] In the diagram: 1-Pull mechanism; 2-Pressure control mechanism; 3-Lifting selection mechanism; 11-Rake body; 12-Check valve; 13-Cavity; 14-Elastic element; 21-Fixed end plate; 22-Rotating shaft; 23-Inner ring; 24-Inner and outer toothed rings; 25-Outer ring; 26-Inner ratchet; 27-Outer ratchet; 28-Inner gear; 29-Outer gear; 210-Pressure shaft; 31-Swing arm; 32-Rotating shaft; 33-Push gear assembly; 34-Rotating gear; 35- Positioning component; 36-stop block; 1101-arc block; 1102-square block; 1103-rake hook; 1104-pressure block; 1105-arc strip; 1201-anti-return slider; 1202-anti-return ratchet; 1203-pressure tooth; 1205-guide rod; 1206-arc guide groove; 1208-arc guide rod; 1301-circular groove; 1302-tangential groove; 1303-trapezoidal tooth; 1304-arc sliding groove; 3301-push tooth; Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, a textile machinery tension rake device with controllable tension includes a tension mechanism 1. The tension mechanism 1 includes a rake body part 11, a check part 12, and a chamber 13. The rake body part 11 is slidably disposed in the chamber 13 and is used to actually act on the fabric to provide tension. The check part 12 is connected to the rake body part 11 through an elastic element 14 and slides inside the chamber 13 to prevent the rake body part 11 from retracting under the tension. The tension mechanism 1 is provided with several rakes arranged evenly in the horizontal direction, which facilitates the simultaneous control of multiple rakes.

[0034] like Figure 2 and Figure 4 As shown, it also includes a pressure control mechanism 2, which is used to apply pressure to the check section 12 and control the magnitude of the applied pressure. The pressure control mechanism 2 includes a fixed end plate 21, a rotating shaft 22 rotatably disposed between the fixed end plates 21, an inner ring 23 fixedly disposed at both ends of the rotating shaft 22, an inner and outer toothed ring 24 rotatably disposed on the outer side of the inner ring 23, an outer ring 25 rotatably disposed on the outer side of the inner and outer toothed ring 24, an inner ratchet 26 fixedly disposed on the outer side of the inner ring 23, and an outer ratchet 27 disposed on the inner side of the outer ring 25. The inner ratchet 26 and the outer ratchet 27 respectively engage with the inner and outer teeth of the inner and outer toothed ring 24, so that when the inner ring 23 rotates, the inner and outer toothed ring 24 can only rotate in one direction on the inner side of the outer ring 25. An inner gear 28 is fixedly disposed at the end of the rotating shaft 22 and corresponding to the inner side of the inner and outer toothed ring 24. An outer gear 29 meshes between the inner gear 28 and the inner teeth of the inner and outer toothed ring 24. A pressure shaft 210 is fixedly disposed between the outer gears 29 at both ends of the rotating shaft 22. The pressure shaft 210 engages with the check valve part 12.

[0035] like Figure 3As shown, one end of the chamber 13 is a circular groove 1301, and the other end of the chamber 13 is a tangential groove 1302. The tangential groove 1302 is in the tangential direction upward of the circular groove 1301. The rake body part 11 includes several arc-shaped blocks 1101 and square blocks 1102. The arc-shaped blocks 1101 are hinged end to end. The square blocks 1102 are hinged on the outermost side of the arc-shaped blocks 1101. A rake hook 1103 is provided on the outer end of the square blocks 1102. The square blocks 1102 slide up and down in the tangential groove 1302. The arc-shaped blocks 1101 slide between the circular groove 1301 and the tangential groove 1302. A pressure block 1104 is fixedly provided on the inner end of the arc-shaped blocks 1101 by an arc-shaped strip 1105.

[0036] like Figure 3 As shown, the check valve part 12 includes a check valve slider 1201 slidably disposed in a circular groove 1301. A check valve ratchet 1202 is hinged on the check valve slider 1201. Trapezoidal teeth 1303 are evenly disposed on the inner side of the circular groove 1301. The check valve ratchet 1202 and the trapezoidal teeth 1303 cooperate with each other.

[0037] like Figure 3 , Figure 4 and Figure 7 As shown, the arc-shaped strip 1105 is slidably connected to the check slider 1201. The pressure block 1104 is located on the inner end side of the check slider 1201. The outer end of the check slider 1201 is hinged with a pressure tooth 1203. A guide rod 1205 is provided on the pressure tooth 1203. The inner end of the arc-shaped block 1101 is provided with an arc-shaped guide groove 1206. The guide rod 1205 is slidably disposed in the arc-shaped guide groove 1206. The elastic element 14 is connected to the pressure block 1104 and applies a force to the pressure block 1104 towards its inner end. The pressure shaft 210 cooperates with the pressure tooth 1203. When the pressure shaft 210 revolves around the axis of the rotating shaft 22, the pressure shaft 210 drives the check slider 1201 to slide in the circular groove 1301 by pushing the pressure tooth 1203. The elastic element 14 is a compression spring and is fixedly disposed between the pressure block 1104 and the check slider 1201. An arc-shaped guide rod 1208 is fixedly installed on the inner end of the anti-return slider 1201. The arc-shaped guide rod 1208 is slidably connected to the pressure block 1104, and the elastic element 14 is located on the outer side of the arc-shaped guide rod 1208. The pressure shaft 210 is flat.

[0038] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, it also includes a lifting selection mechanism 3, which includes swing arms 31 fixedly mounted at both ends of a rotating shaft 22. A rotating shaft 32 is rotatably mounted between the outer ends and inner sides of the swing arms 31. The rotating shaft 32 is provided with push tooth sets 33 corresponding to the chambers 13. Each push tooth set 33 includes multiple push teeth 3301, and the push teeth 3301 of each push tooth set 33 are evenly arranged around the rotating shaft 32. Rotating teeth 34 are provided at both ends of the rotating shaft 32, and the rotating teeth 34 are evenly arranged around the rotating shaft 32. A positioning member 35 that cooperates with the rotating teeth 34 is provided on the swing arms 31. Multiple stops 36 are provided on the fixed end plate 21 and around the rotating shaft 22. 6. A return spring is provided at the rotatable connection between the stop block 36 and the fixed end plate 21, where the stop block 36 has a rotational angle. When the check part 12 slides towards the inside of the chamber 13, the rotating shaft 22 drives the rotating tooth 34 to revolve around the rotating shaft 22 via the swing arm 31. The rotating tooth 34 touches the stop block 36, causing the rotating tooth 34 to rotate around the rotating shaft 32 at a certain angle. Arc-shaped grooves 1304 are provided on the outer side of the chamber 13 and at the position corresponding to the push tooth assembly 33. The push tooth 3301 on the push tooth assembly 33 near the chamber 13 extends into the interior of the chamber 13 through the arc-shaped grooves 1304, and the push tooth 3301 extending into the interior of the chamber 13 is slidably connected to the arc-shaped grooves 1304. The positioning member 35 is a positioning plate, which is rotatably mounted on the swing arm 31.

[0039] like Figures 1 to 7 As shown:

[0040] Working principle of the tension mechanism of this utility model:

[0041] Under the action of external force, specifically the movement of the pressure shaft 210 of the pressure control mechanism 2, the rake body 11 slides towards the inside of the chamber 13, causing the tangential groove 1302 of the rake body 11 to move downwards, thereby providing tension to the rake body 11. When it is necessary to maintain the tension, the ratchet 1202 and the trapezoidal tooth 1303 mesh together to prevent the rake body 11 from retracting. When the ratchet 1202 and the trapezoidal tooth 1303 no longer mesh, they separate, and the tension is released. It should be noted that the way the ratchet 1202 and trapezoidal tooth 1303 of the anti-rebound part 12 of this utility model cooperate is only one way of implementing the anti-rebound part 12. The anti-rebound part 12 can also adopt other structures to prevent the rake body part 11 from rebounding. For example, the anti-rebound part 12 and the chamber 13 can maintain the tension through friction and pressure, or use the principle of overrunning clutch, which can also achieve the function of preventing the rake body part 11 from rebounding. These can be used as other embodiments of this utility model. The position of the ratchet 1202 biting on the trapezoidal tooth 1303 can indicate the strength of the tension. The closer the anti-rebound part 12 is to the inner side of the circular groove 1301, the greater the force.

[0042] Working principle of pressure control mechanism:

[0043] The pressure control mechanism 2 is a mechanism that provides pressure and adjusts the force of the check part 12 by controlling the movement of the pressure shaft 210. Specifically, when the shaft 22 and the inner ring 23 rotate, and the outer ring 25 remains fixed, the inner and outer toothed rings 24 can only rotate in one direction (clockwise) under the action of the outer ratchet 27. When the inner and outer toothed rings 24 and the inner ring 23 rotate simultaneously, they can drive the pressure shaft 210 to revolve around the shaft 22, and the pressure shaft 210 will not rotate on its own axis. Therefore, the pressure shaft 210 is flat and the relative spatial angle with the shaft 22 remains unchanged. The pressure shaft 210 can provide pressure to the check part 12, causing the check part 12 to pull the rake body 11. Specifically, the pressure shaft 210 presses the pressure tooth 1203, the pressure tooth 1203 presses the check slider 1201, and the check slider 1201... The elastic element 14 is compressed, and the inner end of the elastic element 14 squeezes the pressure block 1104. The pressure block 1104 exerts pressure on the rake body 11 to move inward, thereby providing tension to the rake body 11. When the pressure shaft 210 presses the pressure tooth 1203, due to the action of the arc-shaped guide groove 1206, the pressure shaft 210 will pass over the pressure tooth 1203 and disengage from the pressure tooth 1203. The check ratchet 1202 will engage with the trapezoidal tooth 1303 to prevent the check slider 1201 from rebounding. During the weaving process, the length of the woven fabric will increase, and the rake body 11 will move downward under the action of the elastic element 14. After the pressure shaft 210, which has disengaged from the pressure tooth 1203, rotates once, it will press the pressure tooth 1203 again and continue the above actions. This cycle can continuously provide tension to the rake body 11. When the inner and outer gear rings 24 do not rotate, the rotating shaft 22 rotates (counterclockwise). The rotating shaft 22 can drive the outer gear 29 to rotate through the inner gear 28, thereby causing the pressure shaft 210 to rotate. This changes the relative spatial angle between the flat pressure shaft 210 and the rotating shaft 22. The rotation of the pressure shaft 210 can generate a certain push on the pressure teeth 1203, thereby adjusting the pulling force of the check valve part 12 on the rake body part 11.

[0044] Working principle of the ascending selection mechanism:

[0045] When it is necessary to reselect which rake body parts 11 to rise side by side, the rotating shaft 22 rotates (counterclockwise), thereby driving the swing arm 31 to rotate, which in turn drives the rotating tooth 34 to rotate along with the swing arm 31. The rotating tooth 34 will touch the stop 36 on the rotation path. Each time it encounters a stop 36, the rotating tooth 34 will rotate around the rotating shaft 32 by a certain angle. When the rotating tooth 34 rotates around the rotating shaft 32 by a certain angle, the push tooth group 33 will also rotate around the rotating shaft 32. The push teeth 3301 of the push tooth group 33 will have different arrangement patterns, that is, the push teeth 3301 of different push tooth groups 33 will extend into the interior of the chamber 13. In this way, the rotating tooth 34 can control the push teeth 3301 of different push tooth groups 33 to enter the chamber by its own rotation angle. Inside chamber 13, after the selected push tooth 3301 of the push tooth assembly 33 enters chamber 13, the positioning member 35 rotates at a certain angle, so that the positioning member 35 abuts against the rotating tooth 34 to prevent the rotating tooth 34 from moving again. Then the rotating shaft 22 starts to reverse (rotate clockwise). Since the stop block 36 has a rotation angle on the fixed end plate 21, when the fixed rotating tooth 34 touches the stop block 36 again on the return path, the stop block 36 will rotate at a certain angle. The fixed rotating tooth 34 will pass over the stop block 36 and enter the interior of chamber 13. The push tooth 3301 pushes away the anti-return ratchet 1202 respectively, so that the anti-return ratchet 1202 is disengaged from the trapezoidal tooth 1303. The anti-return part 12 is no longer anti-return. The push tooth 3301 pushes the corresponding rake body part 11 at the same time, so that the outer end of the rake body part 11 rises.

[0046] This invention can control the tension of the front and rear needle beds and effectively control the magnitude of the tension. Furthermore, different rake body parts 11 can be selected to rise, making it more suitable for the integrated molding process and more effectively fulfilling the need for independent tension control of the needle beds. The anti-return portion 12 of the rake body 11 slides in the chamber 13 under the action of the pressure control mechanism 2. The sliding of the anti-return portion 12 of the rake body 11 drives the elastic element 14 to apply inward pressure to the inner end of the rake body 11. The pressure shaft 210 controls the sliding distance of the anti-return portion 12 by pushing the pressure tooth 1203 to control the pulling force. When the external force of the pressure shaft 210 of the pressure control mechanism 2 disappears, the anti-return ratchet 1202 and the trapezoidal tooth 1303 mesh with each other to prevent the anti-return portion 12 from retracting, thus maintaining the pulling force. The downward movement of the fabric causes the downward pulling force of the anti-return portion 12 on the rake body 11 to decrease. The pressure control mechanism 2 does work again, and so on. The rake pulls the fabric down to the designated position and then the lifting selection mechanism 3 selects the required rake body 11 to rise, which is one cycle.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A textile machinery tension rake device with controllable tension, characterized in that, The device includes a tension mechanism (1), which includes a rake body part (11), a check part (12), and a chamber (13). The rake body part (11) is slidably disposed in the chamber (13). The check part (12) is connected to the rake body part (11) by an elastic element (14). The check part (12) slides inside the chamber (13). The tension mechanism (1) is provided with several of them and is evenly arranged laterally. One end of the chamber (13) is a circular groove (1301), and the other end of the chamber (13) is a tangential groove (1302). The tangential groove (1302) is tangential to the circular groove (1301) upwards. The rake body part (11) includes several arc-shaped blocks (1101) and square blocks (1102). The arc-shaped blocks (1101) are hinged end to end in sequence, and the square blocks (1102) are hinged to the arc-shaped blocks (1101) in sequence. The outermost side of the hinged arc block (1101) and the outer end of the square block (1102) are provided with a rake hook (1103). The square block (1102) slides up and down in the tangent groove (1302). The arc block (1101) slides between the circular groove (1301) and the tangent groove (1302). The inner end of the arc block (1101) is fixedly provided with a pressure block (1104) by an arc strip (1105). It also includes a pressure control mechanism (2), which includes a fixed end plate (21). A rotating shaft (22) is rotatably arranged between the fixed end plates (21). An inner ring (23) is fixedly arranged at both ends of the rotating shaft (22). An inner and outer toothed ring (24) is rotatably arranged on the outer side of the inner ring (23). An outer ring (25) is rotatably arranged on the outer side of the inner and outer toothed ring (24). An inner ratchet (26) is fixedly arranged on the outer side of the inner ring (23). An outer ratchet (27) is arranged on the inner side of the outer ring (25). The inner ratchet (26) and the outer ratchet (27) are... The inner and outer teeth of the inner and outer gear rings (24) respectively engage with the inner and outer gear rings (24) so ​​that when the inner ring (23) rotates, the inner and outer gear rings (24) can only rotate in one direction inside the outer ring (25). An inner gear (28) is fixedly provided at the end of the shaft (22) and corresponding to the inner side of the inner and outer gear rings (24). An outer gear (29) meshes between the inner gear (28) and the inner teeth of the inner and outer gear rings (24). A pressure shaft (210) is fixedly provided between the outer gears (29) at both ends of the shaft (22). The pressure shaft (210) engages with the check valve part (12).

2. The textile machinery tension rake device with controllable tension according to claim 1, characterized in that, The check valve part (12) includes a check valve slider (1201) slidably disposed in a circular groove (1301). A check valve ratchet (1202) is hinged on the check valve slider (1201). Trapezoidal teeth (1303) are evenly disposed on the inner side of the circular groove (1301). The check valve ratchet (1202) and the trapezoidal teeth (1303) cooperate with each other.

3. A textile machinery tension rake device with controllable tension according to claim 2, characterized in that, The arc-shaped strip (1105) is slidably connected to the check slider (1201). The pressure block (1104) is located on the inner end side of the check slider (1201). The outer end of the check slider (1201) is hinged with a pressure tooth (1203). A guide rod (1205) is provided on the pressure tooth (1203). The inner end of the arc-shaped block (1101) is provided with an arc-shaped guide groove (1206). The guide rod (1205) The sliding arrangement is located in the arc-shaped guide groove (1206). The elastic element (14) is connected to the pressure block (1104) and applies a force to the pressure block (1104) towards its inward end. The pressure shaft (210) cooperates with the pressure tooth (1203). When the pressure shaft (210) revolves around the axis of the rotating shaft (22), the pressure shaft (210) drives the anti-return slider (1201) to slide in the circular groove (1301) by pushing the pressure tooth (1203).

4. A textile machinery tension rake device with controllable tension according to claim 3, characterized in that, The elastic element (14) is a compression spring, and the elastic element (14) is fixedly disposed between the pressure block (1104) and the check slider (1201).

5. A textile machinery tension rake device with controllable tension according to claim 4, characterized in that, An arc-shaped guide rod (1208) is fixedly provided on the inner end side of the anti-return slider (1201). The arc-shaped guide rod (1208) is slidably connected to the pressure block (1104). The elastic element (14) is located on the outer side of the arc-shaped guide rod (1208).

6. A textile machinery tension rake device with controllable tension according to claim 3, characterized in that, The pressure shaft (210) is flat.

7. A textile machinery tension rake device with controllable tension according to any one of claims 1-6, characterized in that, It also includes an upward selection mechanism (3), which includes a swing arm (31) fixedly mounted at both ends of a rotating shaft (22). A rotating shaft (32) is rotatably mounted between the outer ends and inner sides of the swing arm (31). A push tooth assembly (33) corresponding to the chamber (13) is mounted on the rotating shaft (32). The push tooth assembly (33) includes multiple push teeth (3301). The push teeth (3301) of each push tooth assembly (33) are evenly arranged around the rotating shaft (32). Rotating teeth (34) are respectively mounted at both ends of the rotating shaft (32). The rotating teeth (34) are evenly arranged around the rotating shaft (32). A positioning element (35) that cooperates with the rotating teeth (34) is mounted on the swing arm (31). Multiple stops (36) are mounted on the fixed end plate (21) and around the rotating shaft (22). The block (36) has a rotation angle on the fixed end plate (21), and a return spring is provided at the rotation connection between the block (36) and the fixed end plate (21); when the check part (12) slides towards the inside of the chamber (13), the rotating shaft (22) drives the rotating tooth (34) to revolve around the rotating shaft (22) through the swing arm (31), and the rotating tooth (34) touches the stop block (36) so that the rotating tooth (34) rotates around the rotating shaft (32) by a certain angle. The outer side of the chamber (13) and the position corresponding to the push tooth group (33) are respectively provided with arc-shaped sliding grooves (1304). The push tooth (3301) on the push tooth group (33) close to the chamber (13) will extend into the inside of the chamber (13) through the arc-shaped sliding groove (1304), and the push tooth (3301) extending into the inside of the chamber (13) is slidably connected with the arc-shaped sliding groove (1304).

8. A textile machinery tension rake device with controllable tension according to claim 7, characterized in that, The positioning element (35) is a positioning plate, and the positioning element (35) is rotatably mounted on the swing arm (31).

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