CN109162006B - Weft insertion mechanism suitable for plane high-thickness fabric - Google Patents
Weft insertion mechanism suitable for plane high-thickness fabric Download PDFInfo
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- CN109162006B CN109162006B CN201810990680.4A CN201810990680A CN109162006B CN 109162006 B CN109162006 B CN 109162006B CN 201810990680 A CN201810990680 A CN 201810990680A CN 109162006 B CN109162006 B CN 109162006B
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/27—Drive or guide mechanisms for weft inserting
- D03D47/277—Guide mechanisms
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
- D03D47/20—Constructional features of the thread-engaging device on the inserters
- D03D47/23—Thread grippers
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/27—Drive or guide mechanisms for weft inserting
- D03D47/275—Drive mechanisms
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/70—Devices for cutting weft threads
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- Textile Engineering (AREA)
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Abstract
The invention discloses a weft insertion mechanism suitable for plane high-thickness fabrics; the technical problem to be solved is as follows: aiming at the technical problem of low weft insertion efficiency in the process of forming the high-thickness three-dimensional fabric. The technical scheme adopted is as follows: a weft insertion mechanism suitable for plane high-thickness fabrics comprises a weft shearing device, a weft pressing device, a left weft yarn clamp, a right weft yarn clamp, a rapier head, a rapier conveying mechanism, two adjusting side plates, a right weft yarn pre-introduction mechanism, a left weft yarn pre-introduction mechanism and a rack. The weft insertion mechanism is specially designed for the characteristic of large number of layers of the high-thickness three-dimensional fabric, solves the problem of continuous weft introduction in the forming process of the planar high-thickness three-dimensional fabric, and solves the problem that the traditional weft insertion process cannot meet the weaving requirement of the multilayer fabric.
Description
Technical Field
The invention relates to the technical field of textile machinery, in particular to a weft insertion mechanism suitable for plane high-thickness fabrics.
Background
With the rapid development of engineering technology and material science, the requirements of industrial production on the material performance are becoming higher and higher. The fiber composite material has unique and excellent performance, and is widely applied to the fields of aerospace, wind power generation, ships and the like, in particular to the aircraft manufacturing industry. The 2.5D structure fabric and the three-way orthogonal structure fabric belong to three-dimensional fabrics and are integral fiber reinforced frameworks formed by interweaving continuous fibers in a three-dimensional space according to a certain rule. Compared with the yarn distribution of the common fabric X, Y in two directions, the planar high-thickness three-dimensional fabric has continuous fiber distribution in X, Y, Z three directions, so that the interlayer performance of the composite material is improved. The composite material has excellent anti-delamination, anti-fatigue, impact-resistant, high-strength and high-modulus properties, and is widely applied to the fields of aerospace, national defense, military industry and the like.
The main forming process of the high-thickness three-dimensional fabric is the same as that of the common fabric, namely, the forming process is realized through five processes of warp let-off, opening, weft insertion, beating-up and forming traction, wherein the weft insertion process mainly realizes the smooth introduction of weft yarns after the fiber layers are staggered and opened. Compared with the traditional textile production, the high-thickness fabric has the advantages that the number of fiber layers of the fabric is large, the number of weft yarns to be introduced into the same section of the fabric is large, and if the weft insertion mode in the traditional process is adopted, after the weft yarns are introduced into different layers of the same section, openings among warp yarn layers are gradually blurred, so that the weft yarns cannot be continuously introduced, and the smooth proceeding of the subsequent process is influenced.
Application number is 200810197796.9 three-dimensional loom rapier weft insertion device, its major structure adopt rapier wheel drive rapier to realize the weft insertion, belongs to flexible rapier, and the rapier easily causes wearing and tearing to the fibre at the weft insertion in-process. Is suitable for manufacturing the fiber with lower requirement on abrasion resistance.
A multi-layer fabric weaving machine of application No. 201210348554.1, which describes a weaving machine solution for weaving multi-layer fabrics, comprising a weft insertion device. However, the weft insertion device adopts a shuttle weft insertion scheme, the weft insertion efficiency is limited by the weft storage amount of the shuttle, and the weaving efficiency is influenced.
The single-rapier one-time double-weft-yarn leading device with application number of 201510385813.7 is mainly used for improving a weft-yarn leading rapier head and realizing one-time double-strand weft yarn leading.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problem of low weft insertion efficiency in the process of forming the high-thickness three-dimensional fabric.
According to the technical characteristics of the forming of the plane high-thickness three-dimensional fabric, the weft insertion mechanism suitable for forming the multilayer and multiple-breadth plane high-thickness three-dimensional fabric is designed based on the requirements of the forming process on weft insertion actions, the forming efficiency of the fabric is improved, and the applicability of a weaving machine is improved.
In order to solve the technical problems, the invention adopts the technical scheme that:
a weft insertion mechanism suitable for plane high-thickness fabrics comprises a weft shearing device, a weft pressing device, a left weft clamp, a right weft clamp, a rapier head, a rapier conveying mechanism, two adjusting side plates, a right weft pre-introduction mechanism, a left weft pre-introduction mechanism and a rack,
the frame comprises a left frame and a right frame, the left frame and the right frame are respectively arranged on two sides of the whole weaving device, a horizontal line between the left frame and the right frame is defined as a weft position line, and a central axis perpendicular to the weft position line is arranged between the left frame and the right frame;
the weft shearing device, the weft pressing device, the left weft yarn clamp, the left weft yarn pre-introducing mechanism and one adjusting side plate are all arranged on the left side rack, the right weft yarn clamp, the rapier feeding mechanism, the right weft yarn pre-introducing mechanism and the other adjusting side plate are all arranged on the right side rack, and the adjusting side plate on the left side rack and the adjusting side plate on the right side rack are symmetrically arranged around the central axis;
the two adjusting side plates are L-shaped, the long edges of the adjusting side plates are provided with positioning slide blocks which can be embedded into the sliding grooves on the rack, the positioning slide blocks are provided with mounting holes which lock the adjusting side plates at fixed positions, the positioning slide blocks fix the positions through the mounting holes by using bolts, and the adjusting side plates can freely slide along the sliding grooves on the rack by loosening the bolts;
the weft shearing device comprises an upper movable clamping plate, a lower movable clamping plate, a yarn shearing side plate, upper scissors, lower scissors and a return spring, wherein the yarn shearing side plate comprises a weft shearing device mounting plate and a weft shearing device side plate; the lower movable clamping plate is parallel to the weft shearing device side plate and arranged at intervals, the lower movable clamping plate is fixed on the weft shearing device side plate through bolts, the lower scissors are arranged on the inner side surface of the upper part of the lower movable clamping plate, the upper movable clamping plate is arranged between the lower movable clamping plate and the weft shearing device side plate through pins, the pins are located in the middle of the upper movable clamping plate, and the upper movable clamping plate freely rotates around the pins; the return spring is sleeved on the pin, one end of the return spring is fixed on the lower movable clamping plate, and the other end of the return spring is fixed on the upper movable clamping plate; the upper scissors are arranged on the side surface of the top of the upper movable clamping plate and are positioned on the side surface of the upper movable clamping plate close to the lower scissors; the upper scissors and the lower scissors form scissors for cutting off weft yarns, and the opening direction of the scissors faces to the weft yarn position line; a pushing convex part positioned outside the lower movable clamping plate and the weft shearing device side plate is convexly arranged at the bottom end of the upper movable clamping plate;
the left weft yarn pre-introduction mechanism comprises a left horizontal cylinder and a left vertical mounting plate, the left horizontal cylinder is arranged on the short edge of the adjusting side plate on the left rack, the left vertical mounting plate is arranged on a piston rod of the left horizontal cylinder, and the extending direction of the piston rod of the left horizontal cylinder is perpendicular to a weft yarn position line; the left vertical mounting plate comprises a left mounting side plate, a left mounting bottom plate and a left piston rod embedded plate, the left mounting bottom plate is perpendicular to the left piston rod embedded plate, and the left mounting side plate is perpendicular to the left mounting bottom plate and the left piston rod embedded plate; the end part of the piston rod of the left horizontal cylinder is embedded into the left piston rod embedding plate and fixedly connected with the left piston rod embedding plate; a pushing block for pushing a pushing convex part on the upper movable clamping plate to enable the upper movable clamping plate to rotate is convexly and extendedly arranged on the side edge of the left piston rod embedded plate on the side where the left mounting side plate is located;
the left weft clamp comprises a left vertical cylinder, a left upper clamp plate and a left lower clamp plate, the left vertical cylinder is arranged on the left mounting base plate, the left lower clamp plate is arranged on the end face of the extending end of the piston rod of the left vertical cylinder, and the left lower clamp plate is connected with the left vertical cylinder shell; the left upper clamping plate is arranged on a piston rod of the left vertical cylinder, the piston rod of the left vertical cylinder extends and retracts to change the distance between the left upper clamping plate and the left lower clamping plate for clamping or releasing weft yarns, and the extending direction of the piston rod of the left vertical cylinder is perpendicular to the extending direction of the piston rod of the left horizontal cylinder; one end of the left upper clamping plate extends outwards to form a linkage pin shaft;
the weft pressing device comprises a yarn pressing plate, a connecting plate, a guide plate and a pin, wherein the yarn pressing plate and the guide plate are rotatably arranged on a left side mounting side plate of the left side vertical mounting plate, the yarn pressing plate and the guide plate are rotatably connected through the connecting plate and the pin, and the yarn pressing plate, the connecting plate and the guide plate form a connecting rod mechanism; the free end part of the guide plate is provided with a long pin hole, the linkage pin shaft is inserted into the long pin hole and freely slides in the long pin hole, and the yarn pressing plate moves downwards to press weft yarns into the opening of the scissors while moving downwards to clamp the weft yarns by the upper clamping plate on the left side;
the rapier feeding mechanism comprises a linear actuator, a rapier mounting plate and a driving motor, the linear actuator is mounted on the right side rack, the rapier mounting plate is arranged on a horizontal moving sliding table on the linear actuator, the driving motor is arranged on the right side rack, and a motor shaft of the driving motor is connected with a driving input end of the linear actuator;
the tail end of the rapier is arranged on the rapier mounting plate, the rapier is arranged along the motion direction of the linear actuator, and the head end of the rapier is connected with a rapier head;
the right weft yarn pre-introduction mechanism comprises a right horizontal cylinder and a right vertical mounting plate, the right horizontal cylinder is arranged on a short edge of an adjusting side plate on the right rack, the right vertical mounting plate is arranged on a piston rod of the right horizontal cylinder, and the extending direction of the piston rod of the right horizontal cylinder is perpendicular to a weft yarn position line; the right vertical mounting plate comprises a right mounting bottom plate and a right piston rod embedding plate, the right mounting bottom plate is perpendicular to the right piston rod embedding plate, and a piston rod of the right horizontal cylinder is embedded into the right piston rod embedding plate and fixedly connected with the right piston rod embedding plate;
the right weft yarn clamp comprises a right vertical cylinder, a right upper clamp plate and a right lower clamp plate, the right vertical cylinder is arranged on the right mounting base plate, the right lower clamp plate is arranged on the end face of the extending end of the piston rod of the right vertical cylinder, and the right lower clamp plate is connected with the right vertical cylinder shell; the right side upper plate is arranged on a piston rod of the right side vertical cylinder, the piston rod of the right side vertical cylinder extends and retracts to change the distance between the right side upper plate and the right side lower plate for clamping or releasing weft yarns, and the piston rod of the right side vertical cylinder extends out to be perpendicular to the extending direction of the piston rod of the right side horizontal cylinder.
The weft insertion mechanism has the advantages of convenience in operation and maintenance, reduction in labor cost, improvement in production efficiency, improvement in product quality and the like.
Preferably, a waist-shaped groove is formed in the weft cutter mounting plate, and the weft cutter mounting plate is arranged on the weft cutter support plate through the waist-shaped groove and the adjusting bolt. The position of the weft shearing device is adjusted, the weft shearing device is suitable for weaving fabrics with different widths, and the application range of the device is greatly improved.
Compared with the prior art, the invention has the beneficial effects that:
1. the weft insertion mechanism suitable for the plane high-thickness fabric is convenient to operate and maintain, labor cost is reduced, production efficiency is improved, and product quality is improved.
2. The weft insertion mechanism suitable for the plane high-thickness fabric is specially designed aiming at the characteristic that the number of layers of the high-thickness three-dimensional fabric is large, the problem of continuous weft introduction in the forming process of the plane high-thickness three-dimensional fabric is solved, and the problem that the weaving requirement of a multilayer fabric cannot be met by the traditional weft insertion process is solved.
3. The weft insertion mechanism suitable for the plane high-thickness fabric reduces the required beating-up times of the high-thickness three-dimensional fabric along a weft single section in the weft process, greatly reduces the wear rate of warp yarns, and can better adapt to the molding requirements of high-modulus fiber three-dimensional fabrics such as quartz fibers, carbon fibers, silicon carbide fibers and the like.
4. According to the weft insertion mechanism suitable for the plane high-thickness fabric, each key action part adopts an independent driving mode, and the installation positions of the devices of the adjusting part can be adjusted to adapt to weaving fabrics with different widths according to process requirements, so that the application range of equipment is greatly enlarged.
Drawings
FIG. 1 is a layout of the weft insertion mechanism suitable for a flat high-thickness fabric.
Fig. 2 is an enlarged view at a in fig. 1 (the view is rotated to make the positional relationship between the weft cutter, the weft presser and the left weft clamp clear).
FIG. 3 is a schematic view of the left side weft gripper and weft presser of FIG. 2 with the upper scissors of the weft cutter pressed down.
Fig. 4 is a schematic structural view of the weft cutter.
Fig. 5 is a schematic view of the structure of the adjusting side plate.
FIG. 6 is a schematic diagram of the position structure of the left weft pre-insertion mechanism, the left weft clamp and the weft presser.
Fig. 7 is a schematic diagram of the position structure of the right weft pre-insertion mechanism and the right weft clamp.
Fig. 8 is a schematic structural diagram of the sword feeding mechanism.
Detailed Description
The technical solution of the present invention is described in detail below, but the scope of the present invention is not limited to the embodiments.
In order to make the disclosure of the present invention more comprehensible, the following description is further made in conjunction with fig. 1 to 8 and the detailed description.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example (b):
referring to fig. 1, the weft insertion mechanism suitable for the plane high-thickness fabric of the embodiment comprises a weft shearing device 1, a weft pressing device 2, a left weft clamp 3, a right weft clamp 4, a rapier head 5, a rapier 6, a rapier conveying mechanism 7, two adjusting side plates 8, a right weft pre-introduction mechanism 9, a left weft pre-introduction mechanism 10 and a rack 11.
As shown in fig. 1, the frame 11 includes a left frame and a right frame, which are respectively disposed at both sides of the entire weaving apparatus, and defines a horizontal line between the left frame and the right frame as a weft position line 13, and a central axis 12 perpendicular to the weft position line 13 is disposed between the left frame and the right frame.
The frame 11 in this embodiment is divided into a left part and a right part, which are welded by sectional materials, and are installed on two sides of the whole weaving device through bolt connection, so that the stability of the whole weft insertion device is ensured.
As shown in fig. 1, a weft shearing device 1, a weft pressing device 2, a left weft clamp 3, a left weft pre-introducing mechanism 10 and an adjusting side plate 8 are all arranged on a left frame, a right weft clamp 4, a rapier head 5, a rapier 6, a rapier feeding mechanism 7, a right weft pre-introducing mechanism 9 and another adjusting side plate 8 are all arranged on a right frame, and the adjusting side plate 8 on the left frame and the adjusting side plate 8 on the right frame are symmetrically arranged about a central axis 12.
As shown in fig. 5, the two adjusting side plates 8 are both L-shaped, a positioning slider 23 that can be inserted into a sliding groove on the frame is disposed on the long side of the adjusting side plate 8, a mounting hole 24 that locks the adjusting side plate 8 at a fixed position is disposed on the positioning slider 23, the positioning slider 23 fixes the position through the mounting hole 24 using a bolt, and the adjusting side plate 8 can freely slide along the sliding groove on the frame 11 by loosening the bolt.
As shown in fig. 4, the weft shearing device 1 comprises an upper movable clamping plate 17, a lower movable clamping plate 18, a yarn shearing side plate 19, an upper shear 20, a lower shear 21 and a return spring 22, the yarn shearing side plate 19 comprises a weft shearing device mounting plate 19-1 and a weft shearing device side plate 19-2, the weft shearing device mounting plate 19-1 is arranged on the long side of the adjusting side plate 8 on the left rack through a weft shearing device support plate 19-3, the weft shearing device support plate 19-3 is arranged on the long side of the adjusting side plate 8 on the left rack, and the weft shearing device side plate 19-2 is vertically arranged on the weft shearing device mounting plate 19-1; the lower movable clamping plate 18 is parallel to the weft shearing device side plate 19-2 and is arranged at intervals, the lower movable clamping plate 18 is fixed on the weft shearing device side plate 19-2 through bolts, the lower scissors 21 are arranged on the inner side surface of the upper part of the lower movable clamping plate 18, the upper movable clamping plate 17 is arranged between the lower movable clamping plate 18 and the weft shearing device side plate 19-2 through a pin, the pin is positioned in the middle of the upper movable clamping plate 17, and the upper movable clamping plate 17 freely rotates around the pin; a return spring 22 is sleeved on the pin, one end of the return spring 22 is fixed on the lower movable clamping plate 18, and the other end of the return spring 22 is fixed on the upper movable clamping plate 17; the upper scissors 20 are arranged on the side surface of the top of the upper movable clamping plate 17, and the upper scissors 20 are positioned on the side surface of the upper movable clamping plate 17 close to the lower scissors 21; the upper scissors 20 and the lower scissors 21 constitute scissors for cutting the weft, and the opening direction of the scissors is directed toward the weft position thread 13. The bottom end of the upper movable clamping plate 17 is convexly provided with a pushing convex part 17-1 which is positioned outside the lower movable clamping plate 18 and the weft cutter side plate 19-2.
As shown in figure 2, a waist-shaped groove is arranged on the weft cutter mounting plate 19-1, and the weft cutter mounting plate 19-1 is arranged on the weft cutter support plate 19-3 through the waist-shaped groove and the adjusting bolt. The position of the weft shearing device is adjusted, the weft shearing device is suitable for weaving fabrics with different widths, and the application range of the device is greatly improved.
As shown in fig. 6, the left weft pre-insertion mechanism 10 includes a left horizontal cylinder 25 and a left vertical mounting plate 26, the left horizontal cylinder 25 is provided on the short side of the adjusting side plate 8 on the left frame, the left vertical mounting plate 26 is provided on the piston rod of the left horizontal cylinder 25, and the extending direction of the piston rod of the left horizontal cylinder 25 is perpendicular to the weft position line 13; the left vertical mounting plate 26 comprises a left mounting side plate 26-1, a left mounting bottom plate and a left piston rod embedded plate 26-2, the left mounting bottom plate is arranged perpendicular to the left piston rod embedded plate 26-2, and the left mounting side plate 26-1 is arranged perpendicular to the left mounting bottom plate and the left piston rod embedded plate 26-2; the end of the piston rod of the left horizontal cylinder 25 is embedded in and fixedly connected to the left piston rod embedding plate 26-2. A pushing block 26-3 for pushing the pushing convex part 17-1 on the upper movable clamping plate 17 to rotate the upper movable clamping plate 17 is convexly arranged on the side edge of the left piston rod embedded plate 26-2, and the pushing block 26-3 is positioned on the side edge of the left piston rod embedded plate 26-2 on the side of the left mounting side plate 26-1.
The left weft pre-insertion mechanism 10 in this embodiment may also be driven by a hydraulic cylinder driving structure or a servo motor.
As shown in fig. 6, the left weft clamp 3 comprises a left vertical cylinder 27, a left upper clamp 28 and a left lower clamp 29, the left vertical cylinder 27 is arranged on the left mounting base plate, the left lower clamp 29 is arranged on the end surface of the piston rod extension end of the left vertical cylinder 27, and the left lower clamp 29 is connected with the left vertical cylinder 27 shell; the left upper clamp plate 28 is arranged on a piston rod of the left vertical air cylinder 27, the extension and retraction of the piston rod of the left vertical air cylinder 27 realizes the change of the distance between the left upper clamp plate 28 and the left lower clamp plate 29 for clamping or releasing weft yarns, and the extension direction of the piston rod of the left vertical air cylinder 27 is vertical to the extension direction of the piston rod of the left horizontal air cylinder 25; one end of the left upper clamping plate 28 extends outwards to form a linkage pin shaft 35.
As shown in fig. 6, the weft presser 2 comprises a yarn pressing plate 30, a connecting plate 31, a guide plate 32 and a pin 33, wherein the yarn pressing plate 30 and the guide plate 32 are both rotatably arranged on the left side mounting side plate 26-1 of the left side vertical mounting plate 26, the yarn pressing plate 30 and the guide plate 32 are rotatably connected through the connecting plate 31 and the pin 33, and the yarn pressing plate 30, the connecting plate 31 and the guide plate 32 form a link mechanism; the free end of the guide plate 32 is provided with a long pin hole 34, the linkage pin shaft 35 is inserted into the long pin hole 34 and can slide in the long pin hole 34, the yarn pressing plate 30 moves downwards at the left upper clamping plate 28 to clamp the weft yarn, and the yarn pressing plate 30 moves downwards to press the weft yarn into the opening of the scissors.
As shown in fig. 8, the sword feeding mechanism 7 includes a linear actuator 14, a rapier mounting plate 15, and a driving motor 16, the linear actuator 14 is mounted on the right frame, the rapier mounting plate 15 is disposed on the horizontal moving sliding table of the linear actuator 14, the driving motor 16 is disposed on the right frame, and the motor shaft of the driving motor 16 is connected with the driving input end of the linear actuator 14.
In the embodiment, the sword feeding mechanism 7 can also be driven by an air cylinder driving structure, a hydraulic cylinder driving structure or a servo motor.
As shown in fig. 8, the tail end of the rapier 6 is provided on the rapier mounting plate 15, the rapier 6 is provided along the moving direction of the linear actuator 14, and the head end of the rapier 6 is connected to the rapier head 5.
As shown in fig. 7, the right weft pre-insertion mechanism 9 includes a right horizontal cylinder 36 and a right vertical mounting plate 37, the right horizontal cylinder 36 is provided on the short side of the adjusting side plate 8 on the right frame, the right vertical mounting plate 37 is provided on the piston rod of the right horizontal cylinder 36, and the extending direction of the piston rod of the right horizontal cylinder 36 is perpendicular to the weft position line 13; the right vertical mounting plate 37 comprises a right mounting bottom plate 37-1 and a right piston rod embedded plate 37-2, the right mounting bottom plate 37-1 is perpendicular to the right piston rod embedded plate 37-2, and a piston rod of the right horizontal cylinder 36 is embedded in and fixedly connected with the right piston rod embedded plate 37-2;
as shown in fig. 7, the right weft clamp 4 comprises a right vertical cylinder 38, a right upper clamp plate 39 and a right lower clamp plate 40, the right vertical cylinder 38 is arranged on the right mounting base plate 37-1, the right lower clamp plate 40 is arranged on the end surface of the extending end of the piston rod of the right vertical cylinder 38, and the right lower clamp plate 40 is connected with the right vertical cylinder 38 shell; the right upper clamp plate 39 is disposed on the piston rod of the right vertical cylinder 38, the extension and retraction of the piston rod of the right vertical cylinder 38 effects a change in the distance between the right upper clamp plate 39 and the right lower clamp plate 40 for clamping or releasing weft yarn, and the extension of the piston rod of the right vertical cylinder 38 is perpendicular to the extension direction of the piston rod of the right horizontal cylinder 36.
The weft insertion mechanism has the advantages of convenience in operation and maintenance, reduction in labor cost, improvement in production efficiency, improvement in product quality and the like.
The weft insertion mechanism of the embodiment works as follows:
in the forming process, firstly, a weft yarn head is clamped between an upper movable clamping plate 17 and a lower movable clamping plate 18 of the weft shearing device 1, after the warp yarn is opened, a rapier 6 is driven by a rapier conveying mechanism 7, and a rapier head 5 is driven to penetrate through an opening between warp yarn layers and reach the upper part of the weft shearing device 1; then the rapier 6 is driven to do reverse motion through the rapier conveying mechanism 7, so that the rapier head 5 is driven to retreat, the rapier head 5 clamps the weft yarn head in the retreating process, the weft yarn is driven to be separated from the clamping of the weft shearing device 1, and the weft yarn is introduced into the warp yarn layers; after the rapier 6 retreats to the initial position, the left weft yarn pre-introducing mechanism 10 and the right weft yarn pre-introducing mechanism 9 act simultaneously, namely the left horizontal cylinder 25 and the right horizontal cylinder 36 extend out simultaneously to respectively drive the left weft yarn clamp 3 and the right weft yarn clamp 4 to extend out to the introduced weft yarn position 13, and at the moment, the weft yarns are positioned in weft yarn clamp openings of the left weft yarn clamp 3 and the right weft yarn clamp 4; while the left horizontal cylinder 25 is extended, the push block 26-3 in the left weft pre-insertion mechanism 10 is pushed against the push convex part 17-1 in the upper movable clamp plate 17 of the weft cutter 1, so that the upper movable clamp plate 17 and the lower movable clamp plate 18 of the weft cutter 1 are opened at a certain angle, namely the upper scissors 20 and the lower scissors 21 are opened. Then, the left weft clamp 3 and the right weft clamp 4 are synchronously closed to clamp weft yarns, when the left weft clamp 3 is closed, namely the left upper clamp 28 moves downwards to clamp the weft yarns, a linkage pin shaft 35 which is arranged at one end of the left upper clamp 28 and extends outwards drives a guide plate 32 in the weft press 2 to move, and finally a yarn pressing plate 30 in the weft press 2 is driven to move downwards through a link mechanism to press the weft yarns into openings of the scissors; as shown in fig. 3. Then the left weft pre-introducing mechanism 10 and the right weft pre-introducing mechanism 9 synchronously act and reset to drive the left weft clamp 3 and the right weft clamp 4 to retreat to a position away from a weaving opening of a forming area by a certain distance, at the moment, a push block 26-3 in the left weft pre-introducing mechanism 10 is separated from a push convex part 17-1 in an upper movable clamp plate 17 of a weft shearing device 1, the upper movable clamp plate 17 of the weft shearing device 1 returns to be closed under the action of a return spring 22, the upper scissors 20 and the lower scissors 21 are closed to simultaneously shear the weft and the upper movable clamp plate 17 and the lower movable clamp plate 18 clamp a weft head of next weft insertion again; and finally, the left weft clamp 3 and the right weft clamp 4 are opened to release weft yarns, so that one weft insertion action is completed. Then the next layer of warp shedding is performed. And sequentially circulating the weft insertion action and the warp opening action until all warp layers in the same section of the fabric are completely inserted with weft yarns, and finally executing beating-up and traction actions, thereby completing one-weft weaving of the high-thickness three-dimensional fabric.
When the weft insertion mechanism of the embodiment is implemented and meets the weaving requirements of fabrics with different width requirements, the requirements of different widths are met by adjusting the positions of the adjusting side plates 8 on the left side and the right side and adjusting the effective stroke of the rapier 6.
The weft insertion mechanism provided by the embodiment solves the problem of continuous weft insertion in the process of forming the planar high-thickness three-dimensional fabric, and solves the problem that the traditional weft insertion process cannot meet the weaving requirement of a multilayer fabric;
as noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (2)
1. A weft insertion mechanism suitable for plane high-thickness fabrics is characterized by comprising a weft shearing device (1), a weft pressing device (2), a left weft clamp (3), a right weft clamp (4), a rapier head (5), a rapier (6), a rapier conveying mechanism (7), two adjusting side plates (8), a right weft pre-introduction mechanism (9), a left weft pre-introduction mechanism (10) and a rack (11),
the frame (11) comprises a left frame and a right frame, the left frame and the right frame are respectively arranged at two sides of the whole weaving device, a horizontal line between the left frame and the right frame is defined as a weft position line (13), and a central axis (12) vertical to the weft position line (13) is arranged between the left frame and the right frame;
the weft shearing device (1), the weft pressing device (2), the left weft clamp (3), the left weft pre-introduction mechanism (10) and one adjusting side plate (8) are all arranged on the left rack, the right weft clamp (4), the rapier head (5), the rapier (6), the rapier conveying mechanism (7), the right weft pre-introduction mechanism (9) and the other adjusting side plate (8) are all arranged on the right rack, and the adjusting side plate (8) on the left rack and the adjusting side plate (8) on the right rack are symmetrically arranged about a central axis (12);
the two adjusting side plates (8) are L-shaped, positioning sliding blocks (23) which can be embedded into sliding grooves in the rack are arranged on the long sides of the adjusting side plates (8), mounting holes (24) which lock the adjusting side plates (8) at fixed positions are formed in the positioning sliding blocks (23), the positioning sliding blocks (23) fix the positions through the mounting holes (24) by using bolts, and the adjusting side plates (8) can freely slide along the sliding grooves in the rack (11) by loosening the bolts;
the weft shearing device (1) comprises an upper movable clamping plate (17), a lower movable clamping plate (18), a yarn shearing side plate (19), an upper shear (20), a lower shear (21) and a return spring (22), the yarn shearing side plate (19) comprises a weft shearing device mounting plate (19-1) and a weft shearing device side plate (19-2), the weft shearing device mounting plate (19-1) is arranged on the long edge of an adjusting side plate (8) on the left side rack through a weft shearing device support plate (19-3), the weft shearing device support plate (19-3) is arranged on the long edge of the adjusting side plate (8) on the left side rack, and the weft shearing device side plate (19-2) is vertically arranged on the weft shearing device mounting plate (19-1); the lower movable clamping plate (18) is parallel to the weft cutter side plate (19-2) and arranged at intervals, the lower movable clamping plate (18) is fixed on the weft cutter side plate (19-2) through bolts, the lower scissors (21) are arranged on the inner side surface of the upper part of the lower movable clamping plate (18), the upper movable clamping plate (17) is installed between the lower movable clamping plate (18) and the weft cutter side plate (19-2) through pins, the pins are located in the middle of the upper movable clamping plate (17), and the upper movable clamping plate (17) freely rotates around the pins; a return spring (22) is sleeved on the pin, one end of the return spring (22) is fixed on the lower movable clamping plate (18), and the other end of the return spring (22) is fixed on the upper movable clamping plate (17); the upper scissors (20) are arranged on the side surface of the top of the upper movable clamping plate (17), and the upper scissors (20) are positioned on the side surface of the upper movable clamping plate (17) close to the lower scissors (21); the upper scissors (20) and the lower scissors (21) form scissors for cutting off the weft yarns, and the opening direction of the scissors faces to the weft position yarns (13); the bottom end of the upper movable clamping plate (17) is convexly provided with a pushing convex part (17-1) which is positioned outside the lower movable clamping plate (18) and the weft cutter side plate (19-2);
the left weft pre-introduction mechanism (10) comprises a left horizontal cylinder (25) and a left vertical mounting plate (26), wherein the left horizontal cylinder (25) is arranged on the short side of an adjusting side plate (8) on a left rack, the left vertical mounting plate (26) is arranged on a piston rod of the left horizontal cylinder (25), and the extending direction of the piston rod of the left horizontal cylinder (25) is vertical to a weft position line (13); the left vertical mounting plate (26) comprises a left mounting side plate (26-1), a left mounting bottom plate and a left piston rod embedded plate (26-2), the left mounting bottom plate is perpendicular to the left piston rod embedded plate (26-2), and the left mounting side plate (26-1) is perpendicular to the left mounting bottom plate and the left piston rod embedded plate (26-2) at the same time; the end part of the piston rod of the left horizontal cylinder (25) is embedded into the left piston rod embedding plate (26-2) and fixedly connected; a push block (26-3) for pushing a push convex part (17-1) on the upper movable clamping plate (17) to enable the upper movable clamping plate (17) to rotate is convexly and extendingly arranged on the side edge of the left piston rod embedded plate (26-2), and the push block (26-3) is positioned on the side edge of the left piston rod embedded plate (26-2) on the side where the left mounting side plate (26-1) is positioned;
the left weft clamp (3) comprises a left vertical cylinder (27), a left upper clamp plate (28) and a left lower clamp plate (29), the left vertical cylinder (27) is arranged on the left mounting base plate, the left lower clamp plate (29) is arranged on the end face of the extending end of the piston rod of the left vertical cylinder (27), and the left lower clamp plate (29) is connected with the shell of the left vertical cylinder (27); the left upper clamping plate (28) is arranged on a piston rod of the left vertical cylinder (27), the piston rod of the left vertical cylinder (27) extends and retracts to change the distance between the left upper clamping plate (28) and the left lower clamping plate (29) for clamping or releasing weft yarns, and the extending direction of the piston rod of the left vertical cylinder (27) is vertical to the extending direction of the piston rod of the left horizontal cylinder (25); one end of the left upper splint (28) extends outwards to form a linkage pin shaft (35);
the weft pressing device (2) comprises a yarn pressing plate (30), a connecting plate (31), a guide plate (32) and a pin (33), the yarn pressing plate (30) and the guide plate (32) are rotatably arranged on a left side mounting side plate (26-1) of a left side vertical mounting plate (26), the yarn pressing plate (30) and the guide plate (32) are rotatably connected through the connecting plate (31) and the pin (33), and the yarn pressing plate (30), the connecting plate (31) and the guide plate (32) form a connecting rod mechanism; a long pin hole (34) is formed in the free end part of the guide plate (32), a linkage pin shaft (35) is inserted into the long pin hole (34) and freely slides in the long pin hole (34), and the yarn pressing plate (30) moves downwards to press weft yarns into the opening of the scissors while moving downwards to clamp the weft yarns by the left upper clamping plate (28);
the sword feeding mechanism (7) comprises a linear actuator (14), a rapier mounting plate (15) and a driving motor (16), wherein the linear actuator (14) is mounted on a right side rack, the rapier mounting plate (15) is arranged on a horizontal moving sliding table on the linear actuator (14), the driving motor (16) is arranged on the right side rack, and a motor shaft of the driving motor (16) is connected with a driving input end of the linear actuator (14);
the tail end of the rapier (6) is arranged on the rapier mounting plate (15), the rapier (6) is arranged along the motion direction of the linear actuator (14), and the head end of the rapier (6) is connected with the rapier head (5);
the right weft pre-introduction mechanism (9) comprises a right horizontal cylinder (36) and a right vertical mounting plate (37), the right horizontal cylinder (36) is arranged on the short side of the adjusting side plate (8) on the right rack, the right vertical mounting plate (37) is arranged on the piston rod of the right horizontal cylinder (36), and the extending direction of the piston rod of the right horizontal cylinder (36) is perpendicular to the weft position line (13); the right vertical mounting plate (37) comprises a right mounting bottom plate (37-1) and a right piston rod embedding plate (37-2), the right mounting bottom plate (37-1) is perpendicular to the right piston rod embedding plate (37-2), and a piston rod of the right horizontal cylinder (36) is embedded into the right piston rod embedding plate (37-2) and fixedly connected;
the right weft clamp (4) comprises a right vertical cylinder (38), a right upper clamp plate (39) and a right lower clamp plate (40), the right vertical cylinder (38) is arranged on the right mounting base plate (37-1), the right lower clamp plate (40) is arranged on the end face of the extending end of the piston rod of the right vertical cylinder (38), and the right lower clamp plate (40) is connected with the shell of the right vertical cylinder (38); the right upper clamping plate (39) is arranged on a piston rod of the right vertical air cylinder (38), the piston rod of the right vertical air cylinder (38) extends and retracts to change the distance between the right upper clamping plate (39) and the right lower clamping plate (40) for clamping or releasing weft yarns, and the piston rod of the right vertical air cylinder (38) extends in a direction perpendicular to the extending direction of the piston rod of the right horizontal air cylinder (36).
2. Weft insertion mechanism suitable for flat high-thickness fabrics according to claim 1, characterized in that the weft cutter mounting plate (19-1) is provided with a waist-shaped groove, and the weft cutter mounting plate (19-1) is arranged on the weft cutter support plate (19-3) through the waist-shaped groove and the adjusting bolt.
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| CN201810990680.4A CN109162006B (en) | 2018-08-28 | 2018-08-28 | Weft insertion mechanism suitable for plane high-thickness fabric |
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| CN201810990680.4A CN109162006B (en) | 2018-08-28 | 2018-08-28 | Weft insertion mechanism suitable for plane high-thickness fabric |
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| CN109162006B true CN109162006B (en) | 2020-06-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112522840B (en) * | 2020-11-26 | 2023-01-06 | 南京玻璃纤维研究设计院有限公司 | Weft selecting device |
| CN113122999A (en) * | 2021-03-29 | 2021-07-16 | 南京玻璃纤维研究设计院有限公司 | Automatic position-finding variable-width weft insertion device and working method thereof |
| CN115247312B (en) * | 2022-01-05 | 2023-11-21 | 浙江理工大学 | Multilayer weft yarn cutting method |
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| EP0953664A1 (en) * | 1998-04-28 | 1999-11-03 | Sulzer Rüti Ag | Device to cut a weft to be inserted and system to insert a weft with such device |
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