A beating-up device

Abstract

The utility model discloses a beat weft device, including two groups beat weft cam group, driving shaft, a plurality of beat weft drive assembly, support axle, a plurality of parallel swing arm subassembly and a plurality of reed subassembly, beat weft cam group is driven to be connected with driving shaft, and support axle is rotatably connected in the frame, and the input of each beat weft drive assembly is connected with driving shaft, and the input of parallel swing arm subassembly is connected with the drive end corresponding, the connecting end I of each parallel swing arm subassembly is installed on the support axle, and the connecting end II of parallel swing arm subassembly is installed on the main girder, and the drive end of parallel swing arm subassembly is connected with reed subassembly one to one. The utility model discloses the combination mechanism of beat weft drive assembly and parallel swing arm subassembly, not only can utilize parallel swing arm subassembly to convert the rotary motion of beat weft cam group into the reciprocating translation motion of reed, is favorable to the obvious reduction of the interval between the weaving mouth and the first piece brown frame, and can increase beat weft stroke through beat weft drive assembly, is favorable to guarantee to satisfy beat weft long-stroke requirement.

Description

Technical Field

[0001] This utility model belongs to the field of loom technology, and specifically relates to a weft insertion device for double rapier 3D double-sided hollow fabric. Background Technology

[0002] The beat-up mechanism is one of the core components of a loom (such as a rapier loom, air-jet loom, water-jet loom, etc.). Its function is to push the weft yarn introduced into the shed towards the weft, where it interweaves tightly with the warp yarn to form a stable fabric structure. The accuracy, stability, and energy consumption of the beat-up motion directly affect the fabric's uniformity, density, production efficiency, and equipment operating costs.

[0003] Existing looms generally employ cam-rocker direct drive or crank-connecting rod type beat-up mechanisms. These mechanisms drive a crank via a rotating spindle, which in turn drives the reed seat and its fixed reed via a connecting rod to achieve reciprocating beat-up. However, these mechanisms have significant drawbacks: their inherent beat-up stroke is relatively small. Increasing the stroke requires raising the beating spindle angle, i.e., increasing the lift difference of the cam drive assembly. However, an excessively large cam lift difference leads to decreased transmission rigidity, deteriorated motion accuracy, and reduced dynamic stability, affecting fabric production. Furthermore, the existing structure has an excessively large distance between the fabric edge and the first heald frame, which cannot meet the production requirements of double-rapier 3D double-sided hollow fabrics. These fabrics require a large beat-up distance (typically 170cm) and a small distance between the fabric edge and the heald frame. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a weft insertion device that can be used for double-rapier 3D double-sided hollow fabrics. It employs a combination of a weft insertion drive assembly and a parallel rocker arm assembly. This not only allows the parallel rocker arm assembly to convert the rotational motion of the weft insertion cam group into the reciprocating translational motion of the reed, which significantly reduces the distance between the weft inlet and the first heddle frame, but also increases the weft insertion stroke through the weft insertion drive assembly, ensuring that the requirements for a large weft insertion stroke are met.

[0005] The main technical solution adopted in this utility model is as follows: A weft insertion device includes two sets of weft insertion cam groups, a drive shaft, several weft insertion drive components, a support shaft, several parallel rocker arm assemblies, and several reed assemblies. The weft insertion cam groups are driven and connected to the drive shaft, causing the drive shaft to reciprocate around its own central axis. The support shaft is rotatably connected to the frame. The several weft insertion drive components are arranged axially, and the input end of each set of weft insertion drive components is connected to the drive shaft, and the drive end is correspondingly connected to the input end of the parallel rocker arm assembly. The several parallel rocker arm assemblies and reed assemblies are also arranged axially, and the connecting end I of each set of parallel rocker arm assemblies is mounted on the support shaft, and the connecting end II of each parallel rocker arm assembly is mounted on the main beam. The drive end of each parallel rocker arm assembly is correspondingly connected to the reed assembly. The drive shaft drives the parallel rocker arm assemblies through the weft insertion drive components, thereby driving the reed assemblies to perform reciprocating translational motion, and ensuring that the steel buckles on the reed assemblies remain vertical at the extreme positions at both ends of the weft insertion stroke.

[0006] Preferably, the weft insertion drive assembly includes a weft insertion crank and a weft insertion connecting rod. One end of the weft insertion crank is fixedly connected to the drive shaft, and the other end is rotatably connected to one end of the weft insertion connecting rod. The other end of the weft insertion connecting rod is rotatably connected to the input end of the parallel rocker arm assembly.

[0007] Preferably, the parallel rocker arm assembly includes a main rocker arm, a rocker block, and a parallel rocker arm. The connecting end I of the main rocker arm is fixedly connected to the support shaft and reciprocates around its central axis with the support shaft. The input end of the main rocker arm is rotatably connected to the output end of the weft insertion link. The driving end of the main rocker arm is rotatably connected to the rocker block. One end of the rocker block is fixedly connected to the reed assembly, and the other end is rotatably connected to one end of the parallel rocker arm. The connecting end II of the parallel rocker arm is rotatably connected to the main beam.

[0008] Preferably, the drive shaft and the support shaft are arranged parallel to each other along the axial direction, and at least one set of dual-axis support seats is installed between the drive shaft and the support shaft, and the drive shaft and the support shaft are respectively rotatably connected to the dual-axis support seats.

[0009] Preferably, the reed assembly includes a reed base and a reed pressure strip. The reed base is provided with a reed clamping groove for vertically inserting the reed. A slanted slot is provided on one side of the reed base, and the reed pressure strip is inserted into the slanted slot to apply pressure to the reed clamping groove.

[0010] Beneficial effects: This utility model provides a weft insertion device, which has the following advantages: (1) In this utility model, the weft insertion stroke is significantly expanded under the same cam group conditions through the lever amplification effect of the weft insertion drive component; and the parallel rocker arm component converts the rotational motion of the cam into the translational oscillation of the reed, resulting in fast dynamic response and low inertial load. (2) This utility model uses the linkage of the parallel rocker arm assembly (main rocker arm, parallel rocker arm, rocker block) to constrain the reed to remain vertical at the extreme positions at both ends of the weft stroke, completely eliminating the tilting phenomenon of the reed in the rear position in the traditional mechanism, which is conducive to shortening the distance from the weft opening to the first piece of the shed frame, and meeting the process requirements of the double rapier 3D double-sided hollow fabric for small shed opening distance.

[0011] (3) In this utility model, the drive shaft and the support shaft are rigidly fixed by a double-axis support seat, and the rotating pair realized by the bearing can suppress the vibration during high-speed movement and improve the stability of weft insertion. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1; Figure 2 This is a partial top view of the structure in Embodiment 1; Figure 3 This is a schematic diagram of the weft insertion drive component structure in Embodiment 1. Figure 4 This is a schematic diagram of the parallel rocker arm assembly in Embodiment 1. Figure 5 This is a schematic diagram of the operation of Embodiment 1; In the diagram: 1. Weft insertion cam assembly; 2. Drive shaft; 3. Weft insertion drive assembly; 3-1. Weft insertion crank; 3-2. Weft insertion connecting rod; 4. Support shaft; 5. Parallel rocker arm assembly; 5-1. Main rocker arm; 5-1. Connecting end I; 5-11. Rocker block; 5-2. Parallel rocker arm; 5-3. Connecting end II; 5-31. Reed assembly; 6. Reed seat; 6-1. Reed pressure strip; 6-2. Main beam; 7. Rocker arm support seat; 7-1. Double shaft support seat; 8. Reed; 9. Detailed Implementation

[0013] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application. Example 1

[0014] like Figure 1-2As shown, an interlocking device for weaving double-rapier 3D double-sided hollow fabric includes two sets of interlocking cam groups 1, a drive shaft 2, several interlocking drive components 3, a support shaft 4, several parallel rocker arm assemblies 5, and several reed assemblies 6. The interlocking cam groups 1 are driven and connected to the drive shaft 2, driving the drive shaft 2 to reciprocate around its own central axis. The support shaft 4 is rotatably connected to the frame. The several interlocking drive components 3 are arranged axially, and the input end of each interlocking drive component 3 is connected to the drive shaft 2, and the drive end is correspondingly connected to the input end of the parallel rocker arm assembly 5. Both the parallel rocker arm assembly 5 and the reed assembly 6 are arranged axially. The connecting end I of each parallel rocker arm assembly 5 is installed on the support shaft 4, and the connecting end II of the parallel rocker arm assembly is installed on the main beam 7. The driving end of the parallel rocker arm assembly 5 is connected to the reed assembly 6 in a one-to-one correspondence. The driving shaft 2 drives the parallel rocker arm assembly 4 through the weft insertion drive assembly 3, thereby driving the reed assembly 6 to perform reciprocating translational movement, and keeping the reed of the reed assembly 6 in a vertical state at the two extreme positions of the weft insertion stroke. In this embodiment 1, the two extreme positions of the weft insertion stroke refer to the initial end and the end of the weft insertion stroke.

[0015] In this invention, the beat-up cam group 1 can be driven by an independent motor, or it can share a power source with other components of the loom through existing transmission components. This is a conventional technical means, so it is not described in detail.

[0016] In this embodiment 1, as Figure 3 As shown, the weft insertion drive assembly 3 includes a weft insertion crank 3-1 and a weft insertion connecting rod 3-2. One end of the weft insertion crank 3-1 is fixedly connected to the drive shaft 2, and the other end is rotatably connected to one end of the weft insertion connecting rod 3-2. The other end of the weft insertion connecting rod 3-2 is rotatably connected to the input end of the parallel rocker arm assembly 5.

[0017] In this embodiment 1, as Figure 4 As shown, the parallel rocker arm assembly 5 includes a main rocker arm 5-1, a rocker block 5-2, and a parallel rocker arm 5-3. The connecting end I 5-11 of the main rocker arm 5-1 is fixedly connected to the support shaft 4 and reciprocates around its central axis with the support shaft. The input end of the main rocker arm 5-1 is rotatably connected to the output end of the weft-beating connecting rod 3-2. The driving end of the main rocker arm 5-1 is rotatably connected to the rocker block 5-2. One end of the rocker block 5-2 is fixedly connected to the reed assembly 6, and the other end is rotatably connected to one end of the parallel rocker arm 5-3. The connecting end II 5-31 of the parallel rocker arm 5-3 is rotatably connected to the rocker arm support seat 7-1 on the main beam 7. In this invention, the positions of the main beam 7 and the support shaft 4 remain unchanged; therefore, the main rocker arm 5-1, the rocker block 5-2, and the parallel rocker arm 5-3 constitute a parallelogram-like linkage mechanism.

[0018] In this invention, the drive shaft 2 and the support shaft 4 are arranged parallel to each other along the axial direction, and at least one set of dual-axis support seats 8 is installed between the drive shaft 2 and the support shaft 4, and the drive shaft 2 and the support shaft 4 are rotatably connected to the dual-axis support seats 8 respectively.

[0019] In this invention, the reed assembly 6 includes a reed base 6-1 and a reed pressure strip 6-2. The reed base 6-1 has a reed clamping groove 6-3 for vertically inserting the reed 9. One side of the reed base 6-1 has a slanted slot, into which the reed pressure strip 6-2 is inserted to apply pressure to the reed inserted into the reed clamping groove 6-3, ensuring clamping stability. In this invention, the reed base is generally made of aluminum alloy.

[0020] The rotary connection mentioned in this utility model can be achieved by sliding bearings, rolling bearings, etc., and any existing device that can achieve a rotary connection is applicable.

[0021] The working principle of this utility model is as follows: Driven by a power source, the weft insertion cam assembly 1 outputs a reciprocating oscillation to the drive shaft 2, causing the drive shaft 2 to oscillate back and forth around its own central axis at a certain angle (this angle is set according to the weft insertion stroke). The drive shaft 2 drives the weft insertion connecting rod 3-2 through the weft insertion crank 3-1, which in turn drives the main rocker arm 5-1 to oscillate back and forth around its central axis along with the support shaft 4. The main rocker arm 5-1 drives the parallel rocker arm 5-3 to oscillate through the rocker block 5-2. The main rocker arm 5-1 and the parallel rocker arm 5-3 are approximately equal in length in the plane of motion, and together with the frame (defined by the rotation point of the support shaft 4 and the parallel rocker arm 5-3) and the rocker block 5-2, they form a parallelogram-like linkage mechanism. The reed assembly 6 is rigidly connected to the rocker block 5-2, which is supported by the main rocker arm 5-1 and the parallel rocker arm 5-3. Due to the geometric constraints of this type of parallelogram linkage mechanism, the movement trajectory of the reed 9 between the weft insertion station and the weft laying station is limited to reciprocating translation. Figure 5 As shown, it remains vertical at both extreme positions of the translation weft insertion stroke.

[0022] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A weft insertion device, characterized in that, The machine includes two sets of weft-beating cams, a drive shaft, several weft-beating drive components, a support shaft, several parallel rocker arm assemblies, and several reed assemblies. The weft-beating cams are driven and connected to the drive shaft, causing the drive shaft to reciprocate around its central axis. The support shaft is rotatably connected to the frame. The several weft-beating drive components are arranged axially, with the input end of each set connected to the drive shaft and the drive end correspondingly connected to the input end of the parallel rocker arm assembly. The parallel rocker arm assemblies and reed assemblies are also arranged axially, with the connecting end I of each set of parallel rocker arm assemblies mounted on the support shaft and the connecting end II mounted on the main beam. The drive end of each parallel rocker arm assembly is correspondingly connected to the reed assembly. The drive shaft drives the parallel rocker arm assemblies through the weft-beating drive components, thereby driving the reed assemblies to perform reciprocating translational motion and ensuring that the steel buckles on the reed assemblies remain vertical at the extreme positions at both ends of the weft-beating stroke.

2. The weft insertion device according to claim 1, characterized in that, The weft insertion drive assembly includes a weft insertion crank and a weft insertion connecting rod. One end of the weft insertion crank is fixedly connected to the drive shaft, and the other end is rotatably connected to one end of the weft insertion connecting rod. The other end of the weft insertion connecting rod is rotatably connected to the input end of the parallel rocker arm assembly.

3. The weft insertion device according to claim 2, characterized in that, The parallel rocker arm assembly includes a main rocker arm, a rocker block, and a parallel rocker arm. The connecting end I of the main rocker arm is fixedly connected to the support shaft and reciprocates around its central axis with the support shaft. The input end of the main rocker arm is rotatably connected to the output end of the weft insertion link. The driving end of the main rocker arm is rotatably connected to the rocker block. One end of the rocker block is fixedly connected to the reed assembly, and the other end is rotatably connected to one end of the parallel rocker arm. The connecting end II of the parallel rocker arm is rotatably connected to the rocker arm support seat on the main beam.

4. The weft insertion device according to claim 1, characterized in that, The drive shaft and the support shaft are arranged parallel to each other along the axial direction, and at least one set of dual-axis support seats is installed between the drive shaft and the support shaft, and the drive shaft and the support shaft are rotatably connected to the dual-axis support seats respectively.

5. The weft insertion device according to claim 1, characterized in that, The reed assembly includes a reed base and a reed pressure strip. The reed base is provided with a reed clamping groove for vertically inserting the reed. On one side of the reed base, there is an inclined slot. The reed pressure strip is inserted into the inclined slot to apply pressure to the reed clamping groove.

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