Active rapier opening device of rapier loom

Abstract

The utility model relates to the technical field of textile machinery manufacturing, in particular to an active rapier opening device of a rapier loom. The mobile cam mechanism includes a mobile cam and a roller follower assembly. The swing mechanism is driven by the beating-up swing shaft to slightly deflect. And the moving cam performs reciprocating linear displacement motion under the action of the traction force from the swinging mechanism. The roller driven assembly is used as an assembly foundation of the mounting seat. The rapier opening block is used for pressing the rapier receiving head of the rapier so that the rapier receiving head can release yarn and is fixed to the installation base. In the process that the roller driven assembly is controlled by the cam profile of the movable cam to execute reciprocating type linear displacement motion, the mounting base can drive the rapier opening block to be close to / away from the rapier receiving head of the rapier. Thus, on one hand, the displacement precision of the rapier opening block is guaranteed, and then the reliability and accuracy of implementation of the follow-up rapier opening action process are improved; and on the other hand, the service life of the rapier receiving head and the service life of the rapier opening block are greatly prolonged.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery manufacturing technology, and in particular to an active rapier opening device for a rapier loom. 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. There are many types of rapier looms, which can be classified into three types according to the configuration of the rapier: single rapier looms, double rapier looms, and double-layer double-shuttle rapier looms. During the operation of a rapier loom, the weft yarn is introduced by the feed rapier and the receiving rapier. Then, the reed begins to swing and beat the weft yarn. As the reed moves forward, the weft yarn is clamped and beaten.

[0003] In existing technologies, rapier opening mainly employs two methods: Method 1 involves the opening block directly impacting the rapier head to change its thread-holding posture; Method 2 utilizes an electronic control system to assist in altering the relative position of the opening block, thereby causing a regular change in the thread-holding posture of the receiving rapier head. However, in practical applications, both methods present different problems. With Method 1, the opening block and receiving rapier head are easily damaged due to rigid collisions, and with prolonged use, the wear on their working surfaces increases dramatically, inevitably affecting the accuracy of the receiving rapier head's posture change. This often leads to machine downtime due to ineffective yarn release. With Method 2, although the electronic control system allows the opening block to adaptively change its relative position according to the predetermined trajectory of the receiving rapier head, ensuring precise opening, its design is extremely complex, its implementation cost is relatively high, and after a period of operation, the electronic control system requires recalibration. Therefore, it is urgent for technicians to solve these problems. 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 active rapier opening device for the rapier loom.

[0005] To address the aforementioned technical problems, this utility model relates to an active rapier opening device for a rapier loom, comprising a swing mechanism, a movable cam mechanism, an elastic reset mechanism, a mounting base, and an opening block. The movable cam mechanism includes a movable cam and a roller follower assembly. The swing mechanism is directly driven by the beating-off swing shaft and exhibits slight oscillation. The movable cam, under the pulling force from the swing mechanism, performs a reciprocating linear displacement along its length. The roller follower assembly, used in conjunction with the movable cam, serves as the mounting base for the mounting base. The opening block, used to press the rapier's receiving head to release the yarn, is detachably fixed to the mounting base. During the reciprocating linear displacement of the roller follower assembly controlled by the cam profile of the movable cam, the mounting base drives the opening block to approach / move away from the rapier's receiving head, and the elastic reset mechanism synchronously stores / releases elastic potential energy.

[0006] As a further improvement to the technical solution disclosed in this utility model, the roller follower assembly includes a driven roller, a follower, and a first guide block. The first guide block is detachably fixed to the frame and guides the movement direction of the follower by sliding friction. The moving cam is generally rod-shaped, and its sidewall is formed with a cam profile that matches the driven roller. During the process of the moving cam performing reciprocating linear displacement motion, the driven roller rotates freely around its own axis due to the frictional force from the cam profile, and the follower performs reciprocating linear displacement motion under the traction force from the driven roller.

[0007] As a further improvement to the technical solution disclosed in this utility model, the movable cam mechanism also includes a second guide block. The second guide block is detachably fixed to the frame and relies on sliding friction to guide the movement direction of the movable cam.

[0008] As a further improvement to the technical solution disclosed in this utility model, the movable cam mechanism also includes a force balancing component. The force balancing component is used to apply a lateral pushing force to the side wall of the movable cam, and it is assembled on the frame and aligned with the driven roller.

[0009] As a further improvement to the technical solution disclosed in this utility model, the force balancing assembly includes a fixed base and a roller. The fixed base is detachably fixed to the frame. The roller is supported by the fixed base and, due to the frictional force from the sidewall of the moving cam, it freely performs circumferential rotation around its central axis.

[0010] As a further improvement to the technical solution disclosed in this utility model, when used with a single-layer rapier loom, the number of rapier blocks is 1; while when used with a double-layer rapier loom, the number of rapier blocks is 2. The rapier blocks are fixedly connected to the mounting base by screw assemblies. At least two elongated, waist-shaped holes adapted to the screw assemblies and extending along their height direction are formed on the mounting base.

[0011] As a further improvement to the technical solution disclosed in this utility model, the main body of the elastic reset mechanism is a tension spring unit. The tension spring unit serves as the connecting transition between the frame and the driven member. During the process of the driven member performing reciprocating displacement motion, the tension spring unit stores elastic potential energy due to being stretched synchronously, or the stored elastic potential energy is released.

[0012] As a further improvement to the technical solution disclosed in this utility model, the tension spring unit consists of an upper tension spring and a lower tension spring. The elastic reset mechanism also includes an upper fixed post, a lower fixed post, and a double-headed support rod. The double-headed support rod passes through the driven member and is fixed integrally with the driven member. The upper and lower fixed posts are both inserted into the frame and are symmetrically located on the upper and lower sides of the driven member. The two ends of the upper tension spring are respectively pulled by the upper fixed post and the double-headed support rod, while the two ends of the lower tension spring are respectively pulled by the lower fixed post and the double-headed support rod.

[0013] As a further improvement to the technical solution disclosed in this utility model, the swing mechanism includes a long-ear type optical axis clamping ring, a force transmission rod, a limiting plate, a rolling bearing, and a bolt assembly. The long-ear type optical axis clamping ring is in a clamping state to achieve tight clamping and fixation with the weft swing shaft, and serves as the assembly base for the force transmission rod. The rolling bearing is detachably assembled with the moving cam by means of the bolt assembly. A strip-shaped receiving cavity for the rolling bearing to be placed extends inward from the free end face of the force transmission rod. The limiting plate is used to restrict the axial displacement freedom of the rolling bearing, and it is recessed and fixed in the strip-shaped receiving cavity. During the process of the force transmission rod swinging slightly, the rolling bearing performs a free circumferential rotational motion around its central axis due to the frictional force from the side wall of the strip-shaped receiving cavity. At the same time, the rolling bearing performs a reciprocating motion along the length extension direction of the strip-shaped receiving cavity.

[0014] As a further improvement to the technical solution disclosed in this utility model, the swing mechanism also includes a lubrication assembly. The lubrication assembly, used to lubricate the rolling bearing, is built into the force transmission rod. A mounting cavity for inserting the lubrication assembly is provided in the force transmission rod. The bottom wall of the mounting cavity extends inward to form a lubrication channel, until it connects with the strip-shaped receiving cavity. The lubrication assembly includes an oil-pushing plunger and a columnar spring. The oil-pushing plunger is built into the mounting cavity and, together with the circumferential sidewalls and bottom wall of the mounting cavity, forms an oil reservoir for containing grease or lubricating oil. The columnar spring is also built into the mounting cavity and always applies an elastic pushing force to the oil-pushing plunger, forcing the grease or lubricating oil outward into the strip-shaped receiving cavity due to pressure.

[0015] In the actual weaving process, the weft-beating swing shaft drives the reed to perform a slight swaying motion, which clamps the weft yarn and performs the weft-beating action. At the same time, the moving cam performs a reciprocating linear displacement motion due to the pulling force from the weft-beating swing shaft. During the process of the roller follower component performing a reciprocating linear displacement motion due to the cam profile control of the moving cam, the opening block can approach or move away from the receiving head, and the yarn-holding posture of the receiving head can be changed, thereby ensuring that the weft-beating process is consistent with the posture change process of the receiving head.

[0016] In practical applications, the active rapier opening device for rapier looms disclosed in this utility model can achieve at least the following beneficial technical effects, specifically:

[0017] 1) As the reed weft-beating process progresses, the motion trajectory of the moving cam changes accordingly due to the driving force from the weft-beating swing shaft. Consequently, the roller driven component drives the mounting seat and its opening block to approach / move from the receiving head of the rapier, ultimately changing the holding posture of the receiving head to more accurately receive the rapier.

[0018] 2) During different time periods of reed weft insertion, the relative position of the moving cam also changes adaptively, which can effectively reduce its contact time with the roller driven component and help reduce the wear rate. In this way, on the one hand, the displacement accuracy of the opening block is guaranteed, which in turn helps to improve the reliability and accuracy of the subsequent opening action process; on the other hand, the service life of the receiving head and the opening block is greatly improved, and it helps to reduce the later maintenance cost.

[0019] 3) The swing mechanism, the moving cam mechanism and the elastic reset mechanism work together to drive the opening rapier block, which can effectively ensure the opening response speed of the rapier head, and thus help ensure that the rapier loom maintains high-speed weaving and stability throughout the entire operation process.

[0020] 4) In summary, the active rapier loom opening device disclosed in this utility model not only adapts to the high-speed operation of the loom but also ensures precise weft yarn docking. Furthermore, because the feeding and receiving rapiers possess the potential for flexible docking, it effectively expands the applicable categories of weft yarns, such as docking between extremely fine and extremely coarse yarns, between extremely flexible and certain rigid yarns, and between ultrafine and extremely rigid single-F yarns, etc., achieving unexpected benefits. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a schematic diagram showing the positional relationship between the active rapier opening device of the rapier loom and the rapier loom in this utility model.

[0023] Figure 2 This is a schematic diagram of the application state when the active rapier opening device of the rapier loom is matched with the rapier mechanism in this utility model (the rapier mechanism is shown in the form of double-dotted lines).

[0024] Figure 3 This is a three-dimensional schematic diagram of the active rapier opening device of the rapier loom in this utility model.

[0025] Figure 4 This is a three-dimensional schematic diagram from another perspective of the active rapier opening device of the rapier loom in this utility model.

[0026] Figure 5 This is a three-dimensional schematic diagram of the swing mechanism in the active rapier loom opening device of this utility model (the moving cam is shown in the form of a double-dotted line).

[0027] Figure 6 This is a three-dimensional schematic diagram of the swing mechanism in the active rapier loom opening device of this utility model from another perspective (the moving cam is shown in the form of a double-dotted line).

[0028] Figure 7 yes Figure 6 A magnified view of part of I.

[0029] Figure 8 yes Figure 5 The front view.

[0030] Figure 9 yes Figure 8 AA sectional view.

[0031] Figure 10 yes Figure 9 A magnified view of part II.

[0032] Figure 11 This is a three-dimensional schematic diagram of the force transmission rod in the active rapier loom opening device of this utility model (with the hidden lines visible).

[0033] Figure 12 This is a three-dimensional schematic diagram of the force transmission rod in the active rapier loom opening device of this utility model from another perspective.

[0034] Figure 13 This is a three-dimensional schematic diagram of the movable cam mechanism in the active rapier loom opening device of this utility model (the frame is shown in the form of double-dotted lines).

[0035] Figure 14 This is a three-dimensional schematic diagram of the moving cam in the active rapier loom opening device of this utility model.

[0036] Figure 15 This is a three-dimensional schematic diagram of the roller driven component in the active rapier loom opening device of this utility model.

[0037] Figure 16 This is a three-dimensional schematic diagram of the force balance component in the active rapier loom opening device of this utility model.

[0038] Figure 17 This is a three-dimensional schematic diagram of the elastic reset mechanism in the active rapier loom opening device of this utility model (the frame, moving cam, roller driven assembly and second guide block are shown in the form of double-dotted lines).

[0039] Figure 18 This is a three-dimensional schematic diagram of the mounting base in the active rapier loom opening device of this utility model.

[0040] 1-Swing mechanism; 11-Long-ear type optical axis clamping ring; 12-Force transmission rod; 121-Strip-shaped receiving cavity; 122-Mounting cavity; 123-Lubricating oil passage; 13-Limiting plate; 14-Rolling bearing; 15-Bolt assembly; 16-Lubrication assembly; 161-Oil pusher plunger; 162-Columnar spring; 2-Moving cam mechanism; 21-Moving cam; 211-Cam profile; 22-Roller follower assembly; 221-From 222-Driven roller; 223-First guide block; 23-Second guide block; 24-Force balance assembly; 241-Fixed seat; 242-Roller; 3-Elastic reset mechanism; 31-Tension spring unit; 311-Upper tension spring; 312-Lower tension spring; 32-Upper fixed post; 33-Lower fixed post; 34-Double-headed load-bearing rod; 4-Mounting seat; 41-Elongated waist-shaped hole; 5-Opening sword block. Detailed Implementation

[0041] 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.

[0042] The contents disclosed in this utility model will be further described in detail below with reference to specific embodiments. For example... Figure 1 , 2 As shown in the diagram, it is matched with the rapier and located on one side of the reed. During the reed weft insertion process, the active rapier opening device is activated to force a corresponding change in the thread-holding posture of the rapier head, which facilitates the smooth implementation of the weaving process.

[0043] Figure 3 , Figure 4 Two perspective views of the active rapier loom opening device of this utility model are shown respectively. It can be seen that it mainly consists of several parts, including a swing mechanism 1, a movable cam mechanism 2, an elastic reset mechanism 3, a mounting base 4, and an opening block 5. Figure 13 As shown, the movable cam mechanism 2 includes a movable cam 21 and a roller follower assembly 22. The oscillating mechanism 1 is slightly deflected due to direct drive from the weft-beating oscillating shaft. The movable cam 21 performs reciprocating linear displacement along its own length due to the pulling force from the oscillating mechanism 1. The roller follower assembly 22, which is used in conjunction with the movable cam 21, serves as the mounting base for the mounting seat 4. The rapier block 5 is used to press the rapier head to release the yarn, and it is detachably fixed to the mounting seat 4. When the active rapier opening device is used with a single-layer rapier loom, the number of rapier blocks is 1; while when the active rapier opening device is used with a double-layer rapier loom, the number of rapier blocks is 2 (in actual design, the number of rapier blocks is not fixed and needs to be determined based on the actual number of rapiers). The elastic reset mechanism 3 is used to always apply an elastic pulling force to the roller follower assembly 22 to ensure that it is stably pressed against the movable cam 21. During the process of the roller follower assembly 22 performing reciprocating linear displacement motion under the control of the cam profile of the moving cam 21, the mounting base 4 can drive the sword opening block to approach / move away from the sword head of the sword shank, and the elastic reset mechanism 3 can synchronously store / release elastic potential energy.

[0044] In the actual weaving process, the weft-beating swing shaft drives the reed to perform a slight swaying motion, which clamps the weft yarn and performs the weft-beating action. At the same time, the moving cam 21 performs a reciprocating linear displacement motion due to the pulling force from the weft-beating swing shaft. During the process of the roller follower component 22 performing a reciprocating linear displacement motion due to the cam profile control of the moving cam 21, the opening block 5 can approach or move away from the receiving head, and the yarn-holding posture of the receiving head can be adaptively changed, thereby ensuring that the weft-beating process is consistent with the posture change process of the receiving head.

[0045] In practical applications, the active rapier opening device for rapier looms disclosed in the above technical solution can achieve at least the following beneficial technical effects, specifically:

[0046] 1) As the reed weft-beating process progresses, the motion trajectory of the moving cam 21 is adaptively changed due to the driving force from the weft-beating swing shaft. Consequently, the roller driven assembly 22 drives the mounting base 4 and its opening scissor block 5 to approach / move away from the scissor head, ultimately making the thread-holding posture of the scissor head more accurately and adaptively change.

[0047] 2) During different time periods of reed weft insertion, the relative position of the moving cam 21 also changes adaptively, which can effectively reduce its contact time with the roller driven component 22 and help reduce the wear rate. Thus, on the one hand, the displacement accuracy of the opening block 5 is guaranteed, which helps to improve the reliability and accuracy of the subsequent opening action process; on the other hand, the service life of the receiving head and the opening block 5 are greatly improved, and it helps to reduce the later maintenance cost.

[0048] 3) The swing mechanism, the moving cam mechanism and the elastic reset mechanism work together to drive the opening sword block, which can effectively ensure the opening sword response speed of the sword receiving head, and thus help ensure that the rapier loom maintains high-speed weaving and stability throughout the entire operation process;

[0049] 4) In summary, the active rapier loom opening device disclosed in this utility model not only adapts to the high-speed operation of the loom but also ensures precise weft yarn docking. Furthermore, because the feeding and receiving rapiers possess the potential for flexible docking, it effectively expands the applicable categories of weft yarns, such as docking between extremely fine and extremely coarse yarns, between extremely flexible and certain rigid yarns, and between ultrafine and extremely rigid single-F yarns, etc., achieving unexpected benefits.

[0050] It is important to note that the swing mechanism 1, the movable cam mechanism 2, and the elastic reset mechanism 3 work together to drive the opening rapier block 5, which can effectively ensure the opening response speed of the rapier head, thereby helping to ensure that the rapier loom maintains high-speed weaving and stability throughout the entire operation process.

[0051] like Figure 15 As shown, the roller follower assembly 22 mainly consists of several parts, including a driven roller 221, a follower 222, and a first guide block 223. The first guide block 223 is detachably fixed to the frame and guides the movement direction of the follower 222 through sliding friction (e.g., ...). Figure 13 (As shown in the diagram). The follower 222 serves as the assembly base for the mounting seat 4. The movable cam 21 is generally rod-shaped, and its sidewalls are formed with a cam profile 211 that matches the driven roller 221 (as shown in the diagram). Figure 14 (As shown in the diagram). During the reciprocating linear displacement motion of the moving cam 21, the driven roller 221 rotates freely around its own axis due to the frictional force from the cam profile 211. The follower 222 performs reciprocating linear displacement motion under the traction force from the driven roller 221. When the driven roller 221 passes through the cam profile 21 forming section of the moving cam 21, the follower 222 is implemented as intended, allowing the opening block 5 to gradually move away from the receiving head. When the driven roller 221 passes through the non-cam profile 21 forming section of the moving cam 21, because its sidewall is flat, the opening block 5 can approach the sword rod mechanism, thus laying a good foundation for achieving precise pressing of the receiving sword head.

[0052] To ensure that the moving cam 21 maintains good orientation during its reciprocating linear displacement motion, and thus facilitates precise control of the opening block 5's docking posture, as follows: Figure 13 As shown, the movable cam mechanism 2 is further provided with a second guide block 23. The second guide block 23 is detachably fixed to the frame and uses sliding friction to guide the movement direction of the movable cam 21.

[0053] Depend on Figure 13 As can also be clearly seen in the diagram, the movable cam mechanism 2 is further equipped with a force balancing component 24. The force balancing component 24, which is mounted on the frame and aligned with the driven roller 221, applies a lateral pushing force to the side wall of the movable cam 21. Figure 16As shown, the force balancing assembly 24 includes a fixed base 241 and a roller 242. The fixed base 241 is detachably fixed to the frame by screws. The roller 242 is mounted on the fixed base 241 and rotates freely around its central axis due to the frictional force from the side wall of the moving cam 21. During the rolling motion of the driven roller 221 along the moving cam 21, the roller 242 always applies a balancing force to the side wall of the moving cam 21 to counteract the pressure applied to the moving cam 21 by the driven roller 221. In this way, on the one hand, the elastic deformation of the moving cam 21 caused by the unbalanced force can be effectively avoided, which helps to ensure that the driven member 222 always maintains a very high displacement accuracy; on the other hand, the service life of the second guide block 23 is seriously reduced due to the unbalanced force on one side.

[0054] like Figure 3 , 4 As shown, the scissor block 5 is preferably fixedly connected to the mounting base 4 by a screw assembly. Two elongated, waist-shaped holes 41 (e.g., [insert holes here]) are formed on the mounting base 4 to fit the screw assembly and extend along its height direction. Figure 18 (As shown in the diagram). In this way, on the one hand, it is convenient to quickly disassemble and assemble the splitting sword block 5; on the other hand, it is convenient to fine-tune the relative height position of the splitting sword block 5. Specifically, depending on the different relative height positions of the connecting sword head, the worker only needs to loosen each screw, and then drag the splitting sword block 5 along the height direction until it is aligned with the connecting sword head, and then tighten each screw again.

[0055] It is known that, based on design common sense, the elastic reset mechanism 3 can adopt various design structures to achieve elastic traction on the driven member 222, thereby ensuring that the driven roller 221 located at its end always stably contacts the moving cam 21. However, a design structure that is simple, easy to manufacture and implement, and can achieve stable traction on the driven member 222 is recommended here, specifically as follows: Figure 17As shown, the main body of the elastic reset mechanism 3 is preferably a tension spring unit 31. The tension spring unit 31 serves as a connecting transition between the frame and the driven member 222, and it consists of an upper tension spring 311 and a lower tension spring 312. To accommodate the upper tension spring 311 and the lower tension spring 312, the elastic reset mechanism 3 also includes an upper fixing post 32, a lower fixing post 33, and a double-headed support rod 34. The double-headed support rod 34 passes through the driven member 222 and is fixed integrally with it. The upper fixing post 32 and the lower fixing post 33 are both inserted into the frame and are symmetrically located on the upper and lower sides of the driven member 222. The two ends of the upper tension spring 311 are pulled by the upper fixing post 32 and the double-headed support rod 34, respectively, while the two ends of the lower tension spring 312 are pulled by the lower fixing post 33 and the double-headed support rod 34, respectively. During the reciprocating displacement motion of the follower 222, the upper tension spring 311 and the lower tension spring 312 are stretched synchronously, storing elastic potential energy or releasing the stored elastic potential energy.

[0056] like Figure 5-10 As shown, the swing mechanism 1 mainly consists of several parts, including a long-ear type optical axis clamping ring 11, a force transmission rod 12, a limiting plate 13, a rolling bearing 14, and a bolt assembly 15. The long-ear type optical axis clamping ring 11 is in a clamping state to achieve tight clamping and fixing with the weft swing axis, and serves as the assembly base for the force transmission rod 12. The rolling bearing 14 is detachably assembled with the moving cam 21 by means of the bolt assembly 15. A strip-shaped receiving cavity 121 (e.g., for inserting the rolling bearing 14) extends inward from the free end face of the force transmission rod 12. Figure 11 , 12 (As shown in the diagram). The limiting plate 13 is used to restrict the axial displacement freedom of the rolling bearing 14, and it is recessed and fixed in the strip-shaped receiving cavity 121. During the process of the force transmission rod 12 swinging slightly, the rolling bearing 14 rotates freely around its central axis due to the frictional force from the side wall of the strip-shaped receiving cavity 121. At the same time, the rolling bearing 14 performs a reciprocating motion along the length extension direction of the strip-shaped receiving cavity 121. In this way, on the one hand, while ensuring that the swing mechanism 1 has a minimalist design structure, the rotational torque transmitted through the force transmission rod 12 is converted into a dragging force to drive the moving cam 21 to perform a reciprocating motion; on the other hand, during the process of driving the moving cam 21, the rolling bearing 14 and the force transmission rod 12 always exhibit rolling friction, which not only helps to ensure the precise dragging of the moving cam 21 by the swing mechanism 1, but also helps to extend the service life of the rolling bearing 14 and the force transmission rod 12, thereby reducing the frequency of maintenance and costs.

[0057] Furthermore, according to feedback from workshop workers, during the actual weaving process, after a period of operation, the rolling bearing 14 experiences extremely high noise levels and is prone to jamming, inevitably leading to rapid wear of its outer ring. The reason for this is that, as the work progresses, the lubricating grease pre-filled in the strip-shaped receiving cavity 121 is easily lost or oxidized and deteriorated due to high temperatures, and the lubricating grease is difficult to replenish in a timely manner. All these factors combined inevitably result in ineffective lubrication of the rolling bearing 14. Therefore, as a further optimization of the above technical solution, such as... Figure 8-10 As shown, the swing mechanism 1 is further provided with a lubrication assembly 16. The lubrication assembly 16 is used to lubricate the rolling bearing 14 and is built into the force transmission rod 12. The force transmission rod 12 has a mounting cavity 122 for inserting the lubrication assembly 16. The bottom wall of the mounting cavity 122 extends inward to form a lubrication channel 123, and continues to communicate with the strip-shaped receiving cavity 121 (e.g., Figure 11 , 12 (As shown in the diagram). The lubrication assembly 16 includes an oil pusher plunger 161 and a columnar spring 162. The oil pusher plunger 161 is built into the mounting cavity 122 and works in conjunction with the circumferential sidewalls and bottom wall of the mounting cavity 122 to form an oil reservoir for receiving grease or lubricating oil. The columnar spring 162 is also built into the mounting cavity 122 and always applies an elastic pushing force to the oil pusher plunger 161. The grease or lubricating oil is forced outward into the strip-shaped receiving cavity 121 due to the pressure, ensuring that the rolling bearing 14 is well lubricated.

[0058] 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. An active rapier loom opening device, characterized in that, The device includes a swing mechanism, a movable cam mechanism, an elastic reset mechanism, a mounting base, and a rapier block. The movable cam mechanism comprises a movable cam and a roller follower assembly. The swing mechanism is directly driven by the weft-beating swing shaft and swings slightly. The movable cam performs a reciprocating linear displacement along its length due to the pulling force from the swing mechanism. The roller follower assembly, used in conjunction with the movable cam, serves as the mounting base for the mounting base. The rapier block is used to press the rapier head of the rapier shaft to facilitate yarn release and is detachably fixed to the mounting base. During the reciprocating linear displacement of the roller follower assembly controlled by the cam profile of the movable cam, the mounting base drives the rapier block to approach / move away from the rapier head of the rapier shaft, and the elastic reset mechanism synchronously stores / releases elastic potential energy.

2. The active rapier loom opening device according to claim 1, characterized in that, The roller driven assembly includes a driven roller, a driven member, and a first guide block; the first guide block is detachably fixed to the frame and guides the movement direction of the driven member by sliding friction; the moving cam is generally rod-shaped, and its sidewall is formed with a cam profile that matches the driven roller; during the process of the moving cam performing reciprocating linear displacement motion, the driven roller is subjected to frictional force from the cam profile and performs free circumferential rotation around its own axis, and the driven member performs reciprocating linear displacement motion under the traction force from the driven roller.

3. The active rapier loom opening device according to claim 2, characterized in that, The movable cam mechanism also includes a second guide block; the second guide block is detachably fixed to the frame and relies on sliding friction to guide the movement direction of the movable cam.

4. The active rapier loom opening device according to claim 3, characterized in that, The movable cam mechanism also includes a force balancing component; the force balancing component is used to apply a lateral force to the sidewall of the movable cam, is assembled on the frame, and is aligned with the driven roller.

5. The active rapier loom opening device according to claim 4, characterized in that, The force balancing assembly includes a fixed base and a roller; the fixed base is detachably fixed to the frame; the roller is supported by the fixed base and performs free circumferential rotation around its central axis due to the frictional force from the sidewall of the moving cam.

6. The active rapier loom opening device according to claim 1, characterized in that, When used with a single-layer rapier loom, the number of the rapier blocks is 1; when used with a double-layer rapier loom, the number of the rapier blocks is 2; the rapier blocks are fixedly connected to the mounting base by means of a screw assembly; at least two elongated waist-shaped holes adapted to the screw assembly and extending along the height direction are formed on the mounting base.

7. The active rapier loom opening device according to any one of claims 2-5, characterized in that, The main body of the elastic reset mechanism is a tension spring unit; the tension spring unit serves as a connection between the frame and the driven member; during the process of the driven member performing reciprocating displacement motion, the tension spring unit stores elastic potential energy due to being stretched synchronously, or the stored elastic potential energy is released.

8. The active rapier loom opening device according to claim 7, characterized in that, The tension spring unit consists of an upper tension spring and a lower tension spring; the elastic reset mechanism also includes an upper fixed column, a lower fixed column, and a double-headed support rod; the double-headed support rod passes through the driven member and is fixed to the driven member as a whole; the upper fixed column and the lower fixed column are both inserted into the frame and are symmetrically located on the upper and lower sides of the driven member; the two ends of the upper tension spring are respectively pulled by the upper fixed column and the double-headed support rod, while the two ends of the lower tension spring are respectively pulled by the lower fixed column and the double-headed support rod.

9. The active rapier loom opening device according to any one of claims 2-6, characterized in that, The swing mechanism includes a long-ear type optical axis clamping ring, a force transmission rod, a limiting plate, a rolling bearing, and a bolt assembly. The long-ear type optical axis clamping ring is in a clamping state to achieve tight clamping and fixation with the weft swing shaft, and serves as the assembly base for the force transmission rod. The rolling bearing is detachably assembled with the moving cam by means of the bolt assembly. A strip-shaped receiving cavity for the rolling bearing to be placed is extended inward from the free end face of the force transmission rod. The limiting plate is used to restrict the axial displacement freedom of the rolling bearing, and it is recessed and fixed in the strip-shaped receiving cavity. During the process of the force transmission rod swinging slightly, the rolling bearing performs a circumferential rotational motion around its central axis due to the frictional force from the side wall of the strip-shaped receiving cavity. At the same time, the rolling bearing performs a reciprocating motion along the length extension direction of the strip-shaped receiving cavity.

10. The active rapier loom opening device according to claim 9, characterized in that, The swing mechanism also includes a lubrication assembly; the lubrication assembly is used to lubricate the rolling bearing and is built into the force transmission rod; the force transmission rod has a mounting cavity for inserting the lubrication assembly; the bottom wall of the mounting cavity extends inward to form a lubrication channel, and until it communicates with the strip-shaped receiving cavity; the lubrication assembly includes an oil pusher plunger and a columnar spring; the oil pusher plunger is built into the mounting cavity and works with the circumferential sidewall and bottom wall of the mounting cavity to form an oil reservoir for containing grease or lubricating oil; the columnar spring is also built into the mounting cavity and always applies an elastic pushing force to the oil pusher plunger, and the grease or lubricating oil is forced outward into the strip-shaped receiving cavity due to pressure.

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