A rapier transfer mechanism for a rapier textile machine

Abstract

This utility model relates to the field of textile machinery manufacturing technology, and in particular to a rapier textile machine rapier transmission mechanism used to drive a long rapier to perform reciprocating motion. The gear shaft is assembled with the rapier frame via a flange bearing housing. A rapier wheel assembly for directly driving the long rapier is mounted on the gear shaft. Corresponding to the mounting area of ​​the rapier wheel assembly, a receiving cavity for inserting a radial expansion assembly is formed within the gear shaft. The radial expansion assembly includes a first conical compression sleeve, a second conical compression sleeve, a compressed outer expansion sleeve, and a long bolt. As the long bolt rotates circumferentially, the distance between the first and second conical compression sleeves shortens. The first and second conical openings on the compressed outer expansion sleeve expand outward due to the compressive forces from the first and second conical compression sleeves, respectively, thereby forcing the mounting section on the gear shaft to undergo radial expansion, allowing the rapier wheel assembly to achieve circumferential clamping of the gear shaft.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery manufacturing technology, and in particular to a sword-transfer mechanism for a rapier textile machine. Background Technology

[0002] Rapier looms are renowned for their high speed, stability, and versatility, and are widely used in yarn-dyed fabrics, towels, silk fabrics, wool fabrics, and linen fabrics. They are the most common type of loom for weaving small to medium batches of patterned fabrics and have become one of the most widely used and numerous shuttleless looms. Rapier looms come in many forms, and can be classified into three types according to the configuration of the rapiers: single rapier looms, double rapier looms, and double-layer rapier looms.

[0003] The rapier mainly consists of a rapier frame, a long rapier, and a rapier transfer mechanism. The long rapier is used for weft feeding or insertion. The rapier transfer mechanism, supported by the rapier frame, drives the long rapier in reciprocating motion. The rapier transfer mechanism primarily consists of a gear shaft, a flange bearing housing, and a rapier wheel assembly. The gear shaft is assembled with the rapier frame via the flange bearing housing and, when subjected to rotational torque, can alternately rotate clockwise and counterclockwise around its central axis. The rapier wheel assembly, mounted on the gear shaft, directly drives the long rapier. Currently, the industry typically uses spline fixing or externally purchased expansion sleeves to achieve stable holding between the rapier wheel assembly and the gear shaft. In practical applications, if a spline fixing method is adopted, the precise alignment of the spline with the scimitar wheel assembly and gear shaft requires strict control, which inevitably increases the difficulty of parts manufacturing, assembly, and debugging. During assembly, "tooth jamming" problems can easily occur, causing work stoppages, and it is also inconvenient to fine-tune the phase angle of the scimitar wheel assembly. If an externally purchased expansion sleeve is used, it is known that the expansion sleeve is a keyless connection device that uses the pressure and friction generated between the containing surfaces by tightening high-strength bolts to achieve load transfer. Expansion sleeves are not only extremely expensive to purchase, but also difficult to assemble and subsequently disassemble and maintain. Furthermore, after a period of use, the working surface of the expansion sleeve is prone to functional degradation or even failure due to excessive wear. Therefore, it is urgent for technical personnel to address these issues. Summary of the Invention

[0004] Therefore, in view of the above-mentioned existing problems and defects, the project team of this utility model collected relevant information, conducted multiple evaluations and considerations, and carried out continuous experiments and modifications by the project team members, which ultimately led to the emergence of the sword-transfer mechanism of the rapier spinning machine.

[0005] To address the aforementioned technical problems, this utility model relates to a rapier spinning machine rapier transfer mechanism, supported by a rapier frame, used to drive a long rapier to perform reciprocating motion to complete weft feeding or weft insertion operations. The rapier transfer mechanism includes a gear shaft, a flange bearing housing, a rapier wheel assembly, and a radial tensioning assembly. The gear shaft is assembled with the rapier frame via the flange bearing housing, and when subjected to rotational torque, it can alternately perform clockwise and counterclockwise rotation around its own central axis. The rapier wheel assembly, used to directly drive the long rapier, is mounted on the gear shaft. Corresponding to the mounting area of ​​the rapier wheel assembly, a receiving cavity for inserting the radial tensioning assembly is formed within the gear shaft. After the rapier wheel assembly is positioned relative to the gear shaft, the radial tensioning assembly actuates to increase the radial dimension of the mounting section on the gear shaft, allowing the rapier wheel assembly to achieve circumferential clamping of the gear shaft. The radial tensioning assembly includes a first conical compression sleeve, a second conical compression sleeve, a compression-receiving outer expansion sleeve, and a long bolt. Along the length of the gear shaft, the first conical extrusion sleeve, the extruded outer expansion sleeve, and the second conical extrusion sleeve are fitted end-to-end into the receiving cavity with the assistance of a long bolt. The bottom and top walls of the extruded outer expansion sleeve extend in opposite directions to form a first conical opening and a second conical opening, respectively, that fit the first and second conical extrusion sleeves. The first conical extrusion sleeve is located at the bottom of the receiving cavity, fixed integrally with the gear shaft, and its top wall extends downwards with an internally threaded hole that fits the long bolt. As the long bolt is rotated circumferentially, it gradually penetrates deeper into the internally threaded hole, shortening the distance between the first and second conical extrusion sleeves. The first and second conical openings expand outwards due to the extrusion forces from the first and second conical extrusion sleeves, respectively, increasing the radial dimension of the section fitted onto the gear shaft.

[0006] As a further improvement to the technical solution disclosed in this utility model, the extruded outer expansion sleeve is preferably an integral machined part or a forged casting.

[0007] Of course, as another modified design of the above technical solution, the extruded outer expansion sleeve can also preferably be a split structure, which includes a first extruded outer expansion sleeve split with its ends touching, an inner spacer sleeve, and a second extruded outer expansion sleeve split. The first conical opening and the second conical opening are respectively formed on the first extruded outer expansion sleeve split and the second extruded outer expansion sleeve split.

[0008] As a further improvement to the technical solution disclosed in this utility model, the radial expansion assembly also includes a short bolt. The first tapered extrusion sleeve is fixedly connected to the gear shaft by means of the short bolt. The head of the short bolt is welded integrally with the first tapered extrusion sleeve. The bottom wall of the receiving cavity extends downward to form a threaded blind hole adapted to the short bolt.

[0009] As a further improvement to the technical solution disclosed in this utility model, the radial expansion assembly also includes a pressure equalizing plate. The pressure equalizing plate is matched with the long bolt to work together to press against the top of the second conical extrusion sleeve.

[0010] As a further improvement to the technical solution disclosed in this utility model, the sword wheel assembly consists of a first sword wheel, an outer spacer, and a second sword wheel, all of which are axially traversed by the gear shaft. The outer spacer is used to limit the axial distance between the first and second sword wheels, and it is pressed against the first and second sword wheels.

[0011] As a further improvement to the technical solution disclosed in this utility model, the rapier spinning machine's rapier-driven rapier mechanism further includes a first locking component and a second locking component. Both the first locking component and the second locking component are fitted onto the gear shaft and work together to restrict the axial displacement degree of freedom of the rapier assembly.

[0012] As a further improvement to the technical solution disclosed in this utility model, the first locking assembly includes a first open-type optical shaft retaining ring and a first locking screw. The second locking assembly includes a second open-type optical shaft retaining ring and a second locking screw. During the process of tightening the first locking screw and the second locking screw, the radial dimensions of the first open-type optical shaft retaining ring and the second open-type optical shaft retaining ring are adaptively changed, thereby achieving or releasing the circumferential clamping of the gear shaft.

[0013] In practical applications, once the sword wheel assembly is positioned relative to the gear shaft, the worker only needs to tighten the long bolts. The first and second conical extrusion sleeves then move in opposite directions under axial force. Simultaneously, the conical surfaces formed on the first and second conical extrusion sleeves slide along the first and second conical openings, respectively. The first and second conical openings expand outwards due to the extrusion forces from the first and second conical extrusion sleeves, respectively. The section fitted onto the gear shaft undergoes elastic deformation, increasing its radial dimension. This allows for a circumferential grip on the gear shaft. When parts need to be replaced or repaired on the transmission mechanism, the worker only needs to reverse the tightening to loosen the long bolt. Due to the loss of axial force, the axial displacement freedom of the first and second conical extrusion sleeves is released. Under the action of elastic restoring force, the conical surfaces formed on the first and second conical extrusion sleeves gradually slide out from the corresponding first and second conical openings. Under the action of elastic restoring force, the gear shaft assembly returns to its initial outer diameter size, and the circumferential grip on the gear shaft is released.

[0014] In practical applications, the rapier spinning machine rapier transmission mechanism disclosed in this utility model has achieved at least the following beneficial technical effects, specifically:

[0015] 1) In this utility model, the outer expansion sleeve under extrusion utilizes the wedge force generated during the process of pushing the first conical extrusion sleeve and the second conical extrusion sleeve to undergo radial expansion. The outer diameter of the opening section of the receiving cavity expands radially synchronously under the action of the transmitted extrusion force, and the sword wheel assembly can achieve circumferential clamping of the gear shaft. The entire action process is extremely smooth and rapid.

[0016] 2) The scimitar wheel assembly relies on the friction generated with the gear shaft to restrict its circumferential rotational freedom. Compared to traditional splines or externally purchased expansion sleeves for fixation, its clamping shape is more stable and has a certain resistance to impact. However, due to the influence of friction, the axial displacement freedom of the scimitar wheel assembly is also somewhat restricted.

[0017] 3) The process of clamping the sword wheel assembly is extremely convenient, simple and easy to operate. Furthermore, due to the elastic restoring force of the gear shaft sidewall itself, the clamping of the sword wheel assembly on the gear shaft can be automatically released, resulting in a very fast and smooth action response.

[0018] 4) In extreme cases, when the gear shaft is subjected to excessive torsional torque or the scissor wheel assembly is locked due to jamming, the scissor wheel assembly can be forced to release its grip on the gear shaft without causing damage to the scissor wheel assembly, the gear shaft body, or the mating surfaces.

[0019] 5) In practical applications, workers only need to tighten or loosen the circumferential clamping of the sword wheel assembly on the gear shaft by turning the long bolts. The entire operation is extremely fast and convenient, and it is easy to make fine adjustments to the axial relative position of the sword wheel assembly. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional schematic diagram of the rapier in the rapier textile machine of this utility model.

[0022] Figure 2 This is also a three-dimensional schematic diagram of the rapier of the rapier textile machine in this utility model (with the rapier frame hidden).

[0023] Figure 3 This is a three-dimensional schematic diagram of the sword-transfer mechanism in the sword-transfer mechanism of the rapier textile machine of this utility model, from one perspective.

[0024] Figure 4This is a three-dimensional schematic diagram of the sword-transfer mechanism in the rapier textile machine of this utility model, taken from another perspective.

[0025] Figure 5 yes Figure 3 The front view.

[0026] Figure 6 yes Figure 5 AA sectional view.

[0027] Figure 7 This is a three-dimensional schematic diagram of the gear shaft in the rapier spinning machine's rapier transmission mechanism.

[0028] Figure 8 This is a three-dimensional schematic diagram of the sword wheel assembly in the sword transmission mechanism of the rapier textile machine of this utility model.

[0029] Figure 9 This is a cross-sectional view of the sword wheel assembly in the sword transmission mechanism of the rapier textile machine of this utility model.

[0030] Figure 10 This is an exploded view of the radial expansion assembly in the sword-transfer mechanism of the rapier textile machine of this utility model.

[0031] Figure 11 This is a three-dimensional schematic diagram of the first conical extrusion sleeve in the sword-transfer mechanism of the rapier textile machine of this utility model (in the state of being fixed as one piece with the short bolt).

[0032] Figure 12 This is a three-dimensional schematic diagram of the extruded outer expansion sleeve in the sword transmission mechanism of the rapier textile machine of this utility model.

[0033] Figure 13 This is a three-dimensional schematic diagram of the first extruded outer expansion sleeve in the sword transmission mechanism of the rapier textile machine of this utility model.

[0034] Figure 14 This is a three-dimensional schematic diagram of the second extruded outer expansion sleeve in the sword transmission mechanism of the rapier textile machine of this utility model.

[0035] Figure 15 This is a three-dimensional schematic diagram of the first locking component in the sword-transfer mechanism of the rapier textile machine of this utility model.

[0036] Figure 16 This is a three-dimensional schematic diagram of the second locking component in the sword-transfer mechanism of the rapier textile machine of this utility model.

[0037] 1-Sword holder; 2-Long sword shaft; 3-Sword transmission mechanism; 31-Gear shaft; 311-Receiving cavity; 312-Threaded blind hole; 32-Flanged bearing seat; 33-Sword wheel assembly; 331-First sword wheel; 332-Outer spacer; 333-Second sword wheel; 34-Radial expansion assembly; 341-First tapered extrusion sleeve; 3411-Internal threaded hole; 342-Second conical extrusion sleeve; 343-Extruded outer expansion sleeve; 3431-First extruded outer expansion sleeve (partial); 34311-First conical opening; 3432-Inner spacer sleeve; 3433-Second extruded outer expansion sleeve (partial); 34331-Second conical opening; 344-Long bolt; 345-Short bolt; 346-Equalizing plate; 35-First locking assembly; 351-First open-type optical axis fixing ring; 352-First locking screw; 36-Second locking assembly; 361-Second open-type optical axis fixing ring; 362-Second locking screw. Detailed Implementation

[0038] In the description of this utility model, it should be understood that the terms "front", "rear", "up", "down", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] The contents disclosed in this utility model will be further described in detail below with reference to specific embodiments. Figure 1 , Figure 2 The diagrams show two different states of the rapier in the rapier textile machine of this invention. It can be seen that the machine mainly consists of a rapier frame 1, a long rapier 2, and a rapier transfer mechanism 3. The long rapier 2 is used to perform weft feeding or weft insertion operations. The rapier transfer mechanism 3 uses a gear and rack transmission mechanism to drive the long rapier 2 to perform reciprocating motion, and this mechanism is supported by the rapier frame 1.

[0040] Figure 3 , Figure 4 The diagrams show two different perspectives of the sword-transfer mechanism in the rapier textile machine of this invention. It can be seen that it mainly consists of a gear shaft 31, a flange bearing seat 32, a rapier wheel assembly 33, and a radial expansion assembly 34. The gear shaft 31 is assembled with the rapier frame 1 via the flange bearing seat 32 (composed of a flange and a bearing housed therein), and when subjected to rotational torque, it can alternately perform clockwise and counterclockwise rotational movements around its own central axis. The rapier wheel assembly 33, which directly drives the long rapier 2, is mounted on the gear shaft 31. Corresponding to the mounting area of ​​the rapier wheel assembly 33, a receiving cavity 311 is formed within the gear shaft 31 for inserting the radial expansion assembly 34 (e.g., ...). Figure 7 (As shown in the diagram). Once the sword wheel assembly 33 is positioned relative to the gear shaft 31, the radial expansion assembly 34 actuates to increase the radial dimension of the sleeve section on the gear shaft 41, allowing the sword wheel assembly 33 to achieve circumferential clamping of the gear shaft 41.

[0041] like Figure 5 , 6 As shown, the radial expansion assembly 34 mainly consists of a first conical compression sleeve 341, a second conical compression sleeve 342, a compression-receiving outer expansion sleeve 343, and a long bolt 344. Along the length of the gear shaft 31, the first conical compression sleeve 341, the compression-receiving outer expansion sleeve 343, and the second conical compression sleeve 342 are fitted end-to-end into the receiving cavity 311 with the assistance of the long bolt 344. Figure 12 As shown, the extruded outer expansion sleeve 343 is a split structure, comprising a first extruded outer expansion sleeve split 3431 with its ends abutting each other, an inner spacer sleeve 3432, and a second extruded outer expansion sleeve split 3433. The free ends of the first extruded outer expansion sleeve split 3431 and the second extruded outer expansion sleeve split 3433 are respectively formed with a first conical opening 34311 and a second conical opening 34331 (as shown in the image) that are adapted to the conical surfaces of the first conical extrusion sleeve 341 and the second conical extrusion sleeve 342. Figure 13 , 14 (As shown in the diagram). The first conical extrusion sleeve 341 is located at the bottom of the receiving cavity 311, is fixed integrally with the gear shaft 31, and extends downward from its top wall with an internal threaded hole 3411 adapted to the long bolt 344 (as shown in the diagram). Figure 11 (As shown in the diagram). As the circumferentially rotating long bolt 344 progresses, the long bolt 344 gradually penetrates into the internal threaded hole 3411. The distance between the first conical extrusion sleeve 341 and the second conical extrusion sleeve 342 shortens. The first conical opening 34311 and the second conical opening 34331 expand outward due to the extrusion force from the first conical extrusion sleeve 341 and the second conical extrusion sleeve 342, respectively, thereby increasing the radial dimension of the section fitted on the gear shaft 31.

[0042] In practical applications, once the sword wheel assembly 33 is positioned relative to the gear shaft 31, the worker only needs to tighten the long bolt 344. The first conical extrusion sleeve 341 and the second conical extrusion sleeve 342 then move in opposite directions under axial force. Simultaneously, the conical surfaces formed on the first and second conical extrusion sleeves 341 and 342 slide along the first and second conical openings 34311 and 34331, respectively. The first and second conical openings 34311 and 34331 expand outwards due to the extrusion forces from the first and second conical extrusion sleeves 341 and 342, respectively. The section fitted onto the gear shaft 31 undergoes elastic deformation, causing its radial dimension to increase. The sword wheel assembly 33 can achieve circumferential tight grip on the gear shaft 31; when it is necessary to perform parts replacement or repair operation on the sword transmission mechanism 3, the worker only needs to reverse the tightening to loosen the long bolt 344. Due to the loss of axial force, the axial displacement freedom of the first conical extrusion sleeve 341 and the second conical extrusion sleeve 342 is released. The conical surfaces formed on the first conical extrusion sleeve 341 and the second conical extrusion sleeve 342 gradually slide out from the corresponding first conical opening 34311 and second conical opening 34331 under the action of elastic restoring force. The sleeve section on the gear shaft 31 returns to the initial outer diameter size under the action of elastic restoring force, and the sword wheel assembly 33 can release the circumferential tight grip on the gear shaft 31.

[0043] In practical applications, the rapier spinning machine rapier transmission mechanism disclosed in this utility model has achieved at least the following beneficial technical effects, specifically:

[0044] 1) In this utility model, the outer expansion sleeve 343 under extrusion utilizes the wedge force generated during the process of pushing the first conical extrusion sleeve 341 and the second conical extrusion sleeve 342 to undergo radial expansion. The outer diameter of the opening section of the receiving cavity 311 expands radially synchronously under the action of the transmitted extrusion force, so that the sword wheel assembly 33 can achieve circumferential clamping of the gear shaft 31. The entire action process is extremely smooth and rapid.

[0045] 2) The scimitar wheel assembly 33 relies on the friction generated with the gear shaft 31 to restrict its circumferential rotational freedom. Compared with the traditional spline or externally purchased expansion sleeve fixing method, its clamping shape is more stable and has a certain resistance to impact. Similarly, due to the influence of friction, the axial displacement freedom of the scimitar wheel assembly 33 is also restricted to a certain extent.

[0046] 3) The process of clamping the sword wheel assembly 33 is extremely convenient, simple and easy to operate. Moreover, due to the elastic restoring force of the side wall of the gear shaft 31, the clamping of the sword wheel assembly 33 on the gear shaft 31 can be automatically released, and the action response speed is extremely fast and smooth.

[0047] 4) In extreme cases, when the gear shaft 31 is subjected to excessive torsional torque or the sword wheel assembly 33 is locked due to jamming, the sword wheel assembly 33 can be forced to release its grip on the gear shaft 31 without causing damage to the sword wheel assembly 33, the gear shaft 31 body, or the mating surfaces.

[0048] 5) In practical applications, workers only need to tighten or loosen the circumferential clamping of the sword wheel assembly 33 on the gear shaft 31 by turning the long bolt 344. The entire operation is extremely fast and convenient, and it is easy to make fine adjustments to the axial relative position of the sword wheel assembly 33.

[0049] It should also be noted that, in order to ensure that sufficient external expansion deformation can occur immediately when the two ends of the extruded outer expansion sleeve 343 are subjected to the wedge force from the first conical extrusion sleeve 341 and the second conical extrusion sleeve 342, a series of slits (not shown in the figure) can be opened along the circumference of the extruded outer expansion sleeve 343.

[0050] Of course, while ensuring that the gear shaft 31 assembly has sufficient elastic restoring performance, in order to ensure that the gear shaft 31 assembly can generate sufficient elastic expansion when subjected to internal pushing force so that the sword wheel assembly 33 can be stably held, a series of slits (not shown in the figure) can also be opened along the circumference of the gear shaft 31 assembly.

[0051] The extrusion sleeve 343 mentioned above is an assembly, which facilitates its easier and smoother assembly within the gear shaft 31, improving assemblability. However, the total time required for part preparation, welding, and subsequent weld grinding is relatively long, and the manufacturing cost remains high. Therefore, this utility model also provides an alternative solution: the extrusion sleeve 343 can preferably be a one-piece machined part or a forged casting. Both solutions have their advantages and disadvantages, and the optimal choice can be made during the workshop implementation phase.

[0052] It is known that the first conical extrusion sleeve 341 can be stably fixed to the bottom region of the receiving cavity 311 in various ways. However, a solution with a simple design, easy operation, and relatively low implementation cost is recommended here, specifically as follows: Figure 5 , 6 As shown in Figures 10 and 11, the radial expansion assembly 34 is further provided with a short bolt 345. The first tapered extrusion sleeve 341 is fixedly connected to the gear shaft 31 by means of the short bolt 345. The head of the short bolt 345 is fixed integrally with the first tapered extrusion sleeve 341. The bottom wall of the receiving cavity 311 extends downward to form a threaded blind hole 312 adapted to the short bolt 345 (e.g., ...). Figure 7 (as shown in the image).

[0053] In the actual process of the sword wheel assembly 33 clamping the gear shaft 31, the second conical extrusion sleeve 342 is easily damaged by the frictional force or rigid extrusion force from the long bolt 344, which will inevitably affect the full performance of the bulging function of the extruded outer expansion sleeve 343. In view of this, as a further optimization of the above technical solution, such as Figure 5 , 6 As shown in Figure 10, the radial expansion assembly 34 may also be provided with a pressure equalizing plate 346. The pressure equalizing plate 346 is matched with the long bolt 344 to work together to press against the top of the second conical extrusion sleeve 342.

[0054] like Figure 8 , 9 As shown, the sword wheel assembly 33 is preferably a split design to reduce later maintenance costs and facilitate design modifications based on production requirements in practical applications. The sword wheel assembly 33 consists of a first sword wheel 331, an outer spacer 332, and a second sword wheel 333, all of which are axially passed through by the gear shaft 31. The outer spacer 332 is used to limit the axial distance between the first sword wheel 331 and the second sword wheel 333, and it is pressed against the first sword wheel 331 and the second sword wheel 333. Thus, when the first sword wheel 331 or the second sword wheel 333 needs to be replaced due to wear, or when the outer spacer 332 needs to be replaced due to design modifications, only the individual components need to be replaced according to specific requirements, without the need for complete scrapping and replacement.

[0055] As described above, the axial displacement degree of freedom of the sword wheel assembly 33 can be locked by utilizing the outward expansion deformation of the gear shaft 31 (relying on the frictional force generated between the first sword wheel 331, the second sword wheel 333, and the gear shaft 31). However, in practical applications, due to long-term impact forces, locking failure is prone to occur, resulting in the first sword wheel 331 and the second sword wheel 333 not being accurately aligned with their corresponding long sword shank 2. Therefore, as a further optimization of the above technical solution, such as... Figures 3-6 Depending on the actual application scenario and customer requirements, the sword-transfer mechanism 3 can also be equipped with a first locking component 35 and a second locking component 36. Both the first locking component 35 and the second locking component 36 are fitted together with the gear shaft 31 and work together to restrict the axial displacement degree of freedom of the sword wheel assembly 33.

[0056] like Figure 15 , 16As shown, the first locking assembly 35 preferably consists of a first open-type optical axis retaining ring 351 and a first locking screw 352. The second locking assembly 36 preferably consists of a second open-type optical axis retaining ring 361 and a second locking screw 362. During the process of tightening the first locking screw 352 and the second locking screw 362, the radial dimensions of the first open-type optical axis retaining ring 351 and the second open-type optical axis retaining ring 361 are adaptively changed, allowing the sword wheel assembly 33 to achieve or release the circumferential clamping of the gear shaft 31.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rapier spinning machine's rapier transfer mechanism, supported by a rapier frame, drives a long rapier to perform reciprocating motion to complete weft feeding or insertion operations; the rapier transfer mechanism includes a gear shaft, a flange bearing seat, a rapier wheel assembly, and a radial tensioning assembly; the gear shaft is assembled with the rapier frame via the flange bearing seat, and when subjected to a rotational torque, it can alternately perform clockwise and counterclockwise rotation around its own central axis; the rapier wheel assembly, used to directly drive the long rapier, is fitted onto the gear shaft; corresponding to the fitting area of ​​the rapier wheel assembly, a receiving cavity for inserting the radial tensioning assembly is formed within the gear shaft; after the rapier wheel assembly is positioned relative to the gear shaft, the radial tensioning assembly actuates to increase the radial dimension of the fitting section on the gear shaft, allowing the rapier wheel assembly to achieve circumferential clamping of the gear shaft, characterized in that... The radial expansion assembly includes a first conical compression sleeve, a second conical compression sleeve, a compressed outer expansion sleeve, and a long bolt. Along the length of the gear shaft, the first conical compression sleeve, the compressed outer expansion sleeve, and the second conical compression sleeve are fitted end-to-end into the receiving cavity with the assistance of the long bolt. The bottom and top walls of the compressed outer expansion sleeve extend in opposite directions to form a first conical opening and a second conical opening that are adapted to the first and second conical compression sleeves, respectively. The first conical compression sleeve is located at the bottom of the receiving cavity and is fixed integrally with the gear shaft. Its top wall extends downward to form an internal threaded hole adapted to the long bolt. As the long bolt is rotated circumferentially, it gradually penetrates into the internal threaded hole, the distance between the first and second conical compression sleeves shortens, and the first and second conical openings expand outward due to the compressive force from the first and second conical compression sleeves, respectively, thereby increasing the radial dimension of the section fitted on the gear shaft.

2. The rapier spinning machine's rapier-passing mechanism according to claim 1, characterized in that, The extruded outer expansion sleeve is an integral machined part or a forged casting.

3. The rapier spinning machine's rapier-passing mechanism according to claim 1, characterized in that, The extruded outer expansion sleeve is a split structure, which includes a first extruded outer expansion sleeve split with its ends touching, an inner spacer sleeve, and a second extruded outer expansion sleeve split; the first conical opening and the second conical opening are respectively formed on the first extruded outer expansion sleeve split and the second extruded outer expansion sleeve split in a one-to-one correspondence.

4. The rapier spinning machine's rapier-passing mechanism according to claim 1, characterized in that, The radial expansion assembly also includes a short bolt; the first tapered extrusion sleeve is fixedly connected to the gear shaft by means of the short bolt; the head of the short bolt is welded to the first tapered extrusion sleeve; the bottom wall of the receiving cavity extends downward to form a threaded blind hole adapted to the short bolt.

5. The rapier spinning machine's rapier-passing mechanism according to claim 1, characterized in that, The radial expansion assembly also includes a pressure equalizing plate; the pressure equalizing plate is matched with the long bolt to work together to press against the top of the second conical extrusion sleeve.

6. The sword-passing mechanism of the rapier spinning machine according to any one of claims 1-5, characterized in that, The sword wheel assembly consists of a first sword wheel, an outer spacer, and a second sword wheel, all of which are axially traversed by the gear shaft; the outer spacer is used to limit the axial distance between the first sword wheel and the second sword wheel, and is pressed against the first sword wheel and the second sword wheel.

7. The sword-passing mechanism of the rapier spinning machine according to any one of claims 1-5, characterized in that, It also includes a first locking component and a second locking component; both the first locking component and the second locking component are fitted onto the gear shaft and work together to restrict the axial displacement degree of freedom of the sword wheel assembly.

8. The sword-passing mechanism of the rapier spinning machine according to claim 7, characterized in that, The first locking assembly includes a first open-type optical axis retaining ring and a first locking screw; the second locking assembly includes a second open-type optical axis retaining ring and a second locking screw; during the process of tightening the first locking screw and the second locking screw, the radial dimensions of the first open-type optical axis retaining ring and the second open-type optical axis retaining ring are adaptively changed, thereby realizing or releasing the circumferential tightness of the gear shaft.

Images