CN117248318A - Weft finding mechanism of loom - Google Patents
Weft finding mechanism of loom Download PDFInfo
- Publication number
- CN117248318A CN117248318A CN202311521934.5A CN202311521934A CN117248318A CN 117248318 A CN117248318 A CN 117248318A CN 202311521934 A CN202311521934 A CN 202311521934A CN 117248318 A CN117248318 A CN 117248318A
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- Prior art keywords
- weft
- loom
- feeding
- clamping
- frame
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- 230000007246 mechanism Effects 0.000 title claims abstract description 85
- 238000010008 shearing Methods 0.000 claims abstract description 17
- 238000010073 coating (rubber) Methods 0.000 claims description 9
- 238000002161 passivation Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 235000014676 Phragmites communis Nutrition 0.000 abstract description 27
- 239000004744 fabric Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 8
- 239000004753 textile Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
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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
- D03D47/271—Rapiers
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
The invention relates to a weft finding mechanism of a loom, belonging to the technical field of textile machinery; comprises a loom frame, a weft feeding rapier, a weft receiving rapier, a weft frame, a clamping mechanism and a weft shearing mechanism; according to the weft yarn feeding device, the wire feeding clamp is arranged at the rapier head part of the weft feeding rapier and used for clamping the weft yarn end when the weft yarn is delivered, the situation that the weft yarn is excessively clamped at the rapier head part of the weft feeding rapier is avoided, so that the problem that the weft yarn is easily broken when the weft yarn is connected is avoided, two clamping mechanisms are arranged to clamp the two ends of the weft yarn when the weft receiving action of the weft receiving rapier is completed, and the weft yarn is sheared by the weft shearing mechanism, so that the weft yarn is in a horizontal and straight state before being tightly clamped by the reed, the weft yarn is prevented from being in an inclined state before being tightly clamped by the reed, the situation that the weft yarn is still loose after being tightly clamped by the reed is avoided, the hidden danger that the weft yarn is loose and the interweaving structure is unstable is eliminated, the weft yarn searching efficiency is high, the weft searching action is stable and reliable, the weft searching effect is good, and the fabric quality is effectively improved.
Description
Technical Field
The invention relates to a weft finding mechanism of a loom, and belongs to the technical field of textile machinery.
Background
Rapier looms are the most widely used shuttleless looms that draw weft yarns into a shed made of warp yarns by relative reciprocating motion of a bringer rapier and a weft receiving rapier in the reed width direction of the loom, and beat the weft yarns in the shed toward the shed by a reed for warp and weft interlacing to form a fabric.
In the existing rapier loom, a notch is formed in a rapier head to clamp weft yarns to realize weft feeding action, so that the problem that the weft yarns are excessively clamped in the notch sometimes exists, the weft yarns are easily broken when the weft yarns are connected by the weft feeding rapier and the weft receiving rapier, the condition that part of weft yarns on a fabric are lost can occur, broken yarns are wound with the fabric in a disordered state in subsequent textile operation, and the structural stability and the appearance quality of the fabric are affected; in addition, because the weft accumulator, the weft feeding rapier and the weft receiving rapier are not completely positioned on the same axis, certain space is staggered, after the weft receiving rapier finishes weft finding action, the weft yarn is in a slightly inclined state before being tightened by the reed, meanwhile, the existing rapier loom adopts a mode of firstly cutting the weft yarn and then tightening the weft yarn by the reed to enable the weft yarn to be loose before being tightened by the reed, and the problem that the weft yarn is still loose after being tightened to a weaving port by the reed exists, so that the fabric has quality hidden trouble of loose weft yarn and unstable interweaving structure.
Disclosure of Invention
In order to overcome the problems in the background technology, the invention provides a weft finding mechanism of a loom, which adopts a weft feeding cylinder and a weft receiving cylinder to respectively drive a weft feeding sword and a weft receiving sword to respectively execute weft feeding action and weft receiving action, and a wire feeding clamp is arranged at the rapier head part of the weft feeding sword and used for clamping weft ends when weft is fed, so that the situation that the weft is excessively clamped at the rapier head part of the weft feeding sword is avoided, the problem that the weft is easily broken when the weft is connected is avoided, two clamping mechanisms are arranged to clamp the two ends of the weft when the weft receiving action is completed by the weft receiving sword, and the weft is sheared by a weft shearing mechanism, so that the weft is in a horizontal and straight state before being beaten by a reed, the weft is prevented from being in an inclined state before being beaten by the reed, the weft is prevented from being still loose after being beaten by the reed, the hidden danger that the weft is loose and the interweaving structure is unstable is eliminated, the weft finding efficiency is high, the weft finding action is stable and reliable, the weft finding effect is good, and the quality of the fabric is effectively improved.
In order to solve the problems, the invention is realized by the following technical scheme:
the weft finding mechanism of the loom comprises a loom frame, weft feeding swords, weft receiving swords, weft frames, clamping mechanisms and weft shearing mechanisms, wherein the weft feeding swords and the weft receiving swords are respectively arranged on the loom frames on the left side and the right side of the loom, the rear ends of the weft feeding swords penetrate through the left loom frame and are horizontally arranged on a connecting plate, the connecting plate is fixedly connected with the output end of a weft feeding cylinder arranged on the left loom frame, the weft receiving swords are fixedly arranged on the output end of the weft receiving cylinder, the weft receiving cylinder is obliquely downwards arranged on the right loom frame, two wire feeding clamps for clamping the ends of weft yarns when delivering the weft yarns are arranged on the rapier head part of the weft feeding swords, the two wire feeding clamps are respectively symmetrically arranged on the upper side and the lower side of the weft feeding swordheads, the rapier head part of the weft receiving swords are provided with hook plates which are convenient for hooking the weft yarns, and the hook plates extend between the two wire feeding clamps to hook the weft yarns when the weft yarns are jointed;
the weft feeding rapier is characterized in that a weft yarn frame used for supporting weft yarns is arranged above the weft yarn feeding rapier, the weft yarn frame is arranged on the left loom frame, weft yarns to be introduced penetrate through the left loom frame and are arranged on the weft yarn frame in a penetrating mode, a clamping mechanism is respectively arranged on the loom frames on the left side and the right side of the loom through support plates, the two clamping mechanisms are used for clamping two ends of the weft yarns when weft finding is completed, a weft shearing mechanism arranged on the support plates is arranged on the left side of the clamping mechanism close to the left loom frame, the weft shearing mechanism is used for shearing the weft yarns when weft finding is completed, the mounting heights of the clamping mechanism, the weft shearing mechanism and the weft yarn frame are the same, and after weft receiving is completed by the weft receiving rapier, the heights of the weft yarns on the weft receiving rapier are the same as the heights of the clamping mechanism, the weft shearing mechanism and the weft yarn frame are in the same vertical plane.
Preferably, the weft feeding sword is a hollow square tube structure with openings on the right end face and the front side and the rear side, the wire feeding clamps are symmetrically arranged on the upper inner side wall and the lower inner side wall of the weft feeding sword head part, each wire feeding clamp comprises a first clamping plate, a second clamping plate, a hinge shaft and a tension spring, the first clamping plate and the second clamping plate are installed in a crossed hinge mode through the hinge shaft, the tension springs are connected between one side face opposite to the left opening of the first clamping plate and the left opening of the second clamping plate, the openings formed on the right side of the first clamping plate and the right side of the second clamping plate are used for clamping weft ends, the side wall of the bottom of the weft feeding sword is provided with a sliding groove along the weft finding direction, a transverse plate is arranged at the position below the weft feeding sword on a left loom frame, a positioning column is fixedly arranged on the transverse plate and vertically penetrates through the sliding groove to the inner cavity of the weft feeding sword, and when the weft feeding clamps are clamped by the two wire feeding clamps, the left opening of the wire feeding clamps.
Preferably, the first clamping plate and the second clamping plate of the wire feeding clamp are respectively provided with an anti-slip rubber mat on one side surface opposite to the right opening of the second clamping plate, the anti-slip rubber mats are of triangular prism structures, when the wire feeding clamp is closed to clamp the weft yarn end, one side surface opposite to the two anti-slip rubber mats is in a parallel state, and the outer end of the weft feeding rapier head part is subjected to round corner passivation.
Preferably, the weft yarn frame comprises a frame body, the frame body is of an L-shaped structure, the long side of the frame body is fixedly arranged on the left loom frame, the short side of the frame body is arranged above the right opening of the wire feeding clamp, the short side of the frame body is horizontally provided with a threading hole at the position which is positioned on the same plane as the center line of the right opening of the wire feeding clamp, and weft yarns to be introduced penetrate through the loom frame and are arranged in the threading hole of the weft yarn frame in a penetrating mode.
Preferably, the short side of the frame body is provided with a positioning guide groove at a position below the threading hole, the right side of the positioning guide groove is provided with an opening, the upper end of the short side of the frame body is provided with an air nozzle at a position above the positioning guide groove, and the axis of the air nozzle and the axis of the threading hole are in the same vertical plane.
Preferably, the inner wall at the outlet of the right end of the threading hole is subjected to round corner passivation.
Preferably, the clamping mechanism comprises a first double-shaft air cylinder, pneumatic fingers, clamping seats and clamping rods, the first double-shaft air cylinder is horizontally arranged on the support plate, the pneumatic fingers are horizontally arranged on the output ends of the first double-shaft air cylinder, the clamping seats are respectively arranged on the two output ends of the pneumatic fingers, the clamping rods for clamping weft yarns are respectively horizontally arranged on the two clamping seats, and the two clamping mechanisms on the loom frames on the left side and the right side of the loom are identical in structure and mounting height.
Preferably, the outside of clamping lever is provided with anti-skidding rubber coating, just clamping lever and anti-skidding rubber coating are square plate structure.
Preferably, the weft cutting mechanism comprises a second double-shaft air cylinder and pneumatic scissors, the second double-shaft air cylinder is arranged at a position close to the left side of the clamping mechanism of the left loom frame, the second double-shaft air cylinder is horizontally arranged on the support plate, the pneumatic scissors are horizontally arranged at the output end of the second double-shaft air cylinder, and the installation height of the pneumatic scissors is the same as that of the two clamping mechanisms.
The beneficial effects of the invention are as follows:
the weft feeding cylinder and the weft receiving cylinder are used for respectively driving the weft feeding sword and the weft receiving sword to respectively execute weft feeding action and weft receiving action, and the weft feeding clamp is arranged at the rapier head part of the weft feeding sword and used for clamping the weft ends when the weft is fed, so that the situation that the weft is excessively clamped at the rapier head part of the weft feeding sword is avoided, the problem that the weft is easily broken when the weft is connected is avoided, two clamping mechanisms are arranged for clamping the two ends of the weft when the weft receiving action is completed by the weft receiving sword, and the weft is sheared by the weft shearing mechanism, so that the weft is in a horizontal and straight state before being tightly clamped by the reed, the weft is prevented from being in an inclined state before being tightly clamped by the reed, the situation that the weft is still loose after being tightly clamped by the reed is avoided, the hidden danger that the weft is loose and the interweaving structure is unstable is eliminated, the weft finding efficiency is high, the weft finding action is stable and reliable, the weft finding effect is good, and the quality of the fabric can be effectively improved.
Drawings
FIG. 1 is a schematic view of the overall structure and weft yarn passing condition of the present invention;
FIG. 2 is a front view of the weft yarn splicing state of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 1;
FIG. 4 is a top plan view of the present invention with the thread feeding clamp closed and clamping a weft thread;
FIG. 5 is an exploded view of the clamping mechanism of the present invention;
FIG. 6 is a schematic view showing the overall structure and the weft finding completion state of the present invention;
FIG. 7 is a front view of the completed state of weft finding according to the present invention;
FIG. 8 is a schematic view of the position of the ends of the weft yarn after cutting of the weft yarn in the weft frame structure of the present invention;
fig. 9 is a top view of the present invention with the thread feeding clamp open to clamp a weft thread.
Reference numerals illustrate: 1. a loom frame;
2. 2-1 parts of weft feeding rapier, 2-1 parts of thread feeding clamps, 2-1-1 parts of first clamping plates, 2-1-2 parts of second clamping plates, 2-1-3 parts of hinge shafts, 2-1-4 parts of tension springs, 2-1-5 parts of anti-skid rubber mats, 2-2 parts of sliding grooves;
3. weft insertion sword, 3-1, hook plate;
4. the weft yarn frame comprises 4-1 parts of weft yarn frames, frame bodies, 4-1-1 parts of threading holes, 4-2 parts of positioning guide grooves, 4-3 parts of air nozzles;
5. the clamping mechanism comprises 5-1 parts of clamping mechanisms, 5-2 parts of first double-shaft cylinders, 5-3 parts of pneumatic fingers, 5-4 parts of clamping seats, clamping rods and 5-5 parts of anti-skid rubber coatings;
6. 6-1, a second double-shaft cylinder, 6-2 and pneumatic scissors;
7. weft yarns; 8. a connecting plate; 9. weft feeding cylinder; 10. weft insertion cylinder; 11. a support plate; 12. a cross plate; 13. and positioning columns.
Detailed Description
In order to make the objects, technical solutions, and achievement of the objects and effects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below for understanding by a skilled person.
It should be noted that, in the description of the present invention, unless explicitly specified or limited, terms such as "mounted," "connected," and the like are to be construed broadly and may be either fixed or removable; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium.
In the invention, as shown in figures 1-9, a weft finding mechanism of a loom comprises a loom frame 1, a weft feeding sword 2, a weft receiving sword 3, a weft frame 4, a clamping mechanism 5 and a weft shearing mechanism 6, wherein the weft feeding sword 2 and the weft receiving sword 3 are respectively arranged on the loom frame 1 on the left side and the right side of the loom, the rear end of the weft feeding sword 2 penetrates through the left loom frame 1 and is horizontally arranged on a connecting plate 8, the connecting plate 8 is fixedly connected with the output end of a weft feeding cylinder 9 arranged on the left loom frame 1, the weft receiving sword 3 is fixedly arranged on the output end of a weft receiving cylinder 10, the weft receiving cylinder 10 is obliquely downwards arranged on the right loom frame 1, two wire clamps 2-1 for clamping the end heads of the weft yarn 7 when delivering the weft yarn 7 are respectively arranged on the upper side and the lower side of the weft feeding sword 2, the head parts of the weft receiving sword 3 are respectively symmetrically arranged on the upper side and the lower side of the weft feeding sword 2, a hook plate 3 convenient for the weft yarn 3 is arranged on the weft receiving plate 3, and the weft feeding clamp 2-1 is hooked between the weft feeding clamps 2-1 when the weft yarn 7 are hooked by the hook plate 3-1; thus, before the weft finding operation starts, the end of the weft yarn 7 is clamped by the two thread feeding clamps 2-1, then the weft feeding rapier 2 is pushed to horizontally move rightwards by the weft feeding cylinder 9, the weft feeding rapier 2 drives the two thread feeding clamps 2-1 to horizontally move rightwards to finish the weft yarn 7 delivery action, in the weft feeding rapier 2 delivery process, the weft receiving rapier 3 is pushed to leftwards by the weft receiving cylinder 10, when the weft feeding rapier 2 and the weft receiving rapier 3 move to the middle part of the loom, the hook plate 3-1 at the rapier head part of the weft receiving rapier 3 extrudes the clamped end of the weft yarn 7, the weft receiving rapier 3 drives the hook plate 3-1 to move to the left side of the weft yarn 7 and is separated from the extruded weft yarn 7, then the weft receiving rapier 7 end resets into the hook plate 3-1, then the weft receiving cylinder 10 drives the weft receiving rapier 3-1 to rightwards to reset until the weft yarn 7 is separated from the two thread feeding clamps 2-1 to finish the delivery action of the weft receiving rapier 7, and then the weft receiving rapier 3 continues to reset the weft receiving action until the weft 7 is moved rightwards by the weft receiving cylinder 10. In the embodiment, the feeding clamp 2-1 is arranged at the rapier head part of the weft feeding rapier 2 and used for clamping the end of the weft yarn 7 when the weft yarn 7 is delivered, so that the situation that the weft yarn 7 is excessively clamped at the rapier head part of the weft feeding rapier 2 is avoided, the problem that the weft yarn 7 is easily broken when the weft yarn 7 is connected is avoided, the situation that part of the weft yarn 7 is lost in the fabric is avoided, and the structural stability and the appearance quality of the fabric can be effectively ensured; the weft insertion sword 3 pulls the weft yarn 7 by adopting the mode that the hook plate 3-1 hooks the end head of the weft yarn 7, the effective contact area of the weft yarn 7 and the inner side wall of the hook plate 3-1 is large, the friction force between the weft yarn 7 and the hook plate 3-1 is increased, the weft yarn 7 of the weft insertion sword 3 can be effectively prevented from sliding off in the weft yarn 7 pulling process, the weft yarn 7 is stably received, and the weft finding effect is good; the cylinder is adopted to drive the weft feeding rapier 2 and the weft receiving rapier 3 to respectively execute the weft 7 delivery action and the weft 7 receiving action, so that the weft finding efficiency is high, and the weft finding action is stable and reliable.
In this embodiment, a weft frame 4 for supporting a weft yarn 7 is disposed above the weft feeding rapier 2, the weft frame 4 is mounted on the left loom frame 1, the weft yarn 7 to be inserted is threaded through the left loom frame 1 on the weft frame 4, two clamping mechanisms 5 are respectively mounted on the loom frames 1 on the left and right sides of the loom through a support plate 11, the two clamping mechanisms 5 are used for clamping two ends of the weft yarn 7 when weft finding is completed, and a weft cutting mechanism 6 mounted on the support plate 11 is disposed on the left side of the clamping mechanism 5 near the left loom frame 1, and the weft cutting mechanism 6 is used for cutting the weft yarn 7 when weft finding is completed, so that when the weft receiving action of the weft receiving rapier 3 pulls the weft yarn 7 to the right end of the loom is completed, the two clamping mechanisms 5 clamp the two ends of the weft yarn 7, and the weft yarn 7 is cut by the weft cutting mechanism 6; the clamping mechanism 5, the weft shearing mechanism 6 and the weft frame 4 are same in installation height, after the weft 7 is received by the weft receiving sword 3, the weft 7 is identical in height on the weft receiving sword 3 and the weft 7 is on the same vertical plane as the clamping mechanism 5, the weft shearing mechanism 6 and the weft frame 4, so that the weft 7 is in a horizontal and straight state before being tightly pressed by a reed, the weft 7 on the clamping mechanism 5, the weft shearing mechanism 6 and the weft frame 4 is on the same horizontal line parallel to the reed, the weft 7 is prevented from being in an inclined state before being pressed by the reed, the condition that the weft 7 is still loose after being pressed by the reed is avoided, hidden danger of loosening and unstable interweaving structure of a fabric is eliminated, the weft finding effect is good, and the quality of the fabric can be effectively improved.
In this embodiment, the weft feeding sword 2 is a hollow square tube structure with openings on the right end face and the front and rear side faces, the wire feeding clamp 2-1 is symmetrically arranged on the upper and lower inner side walls of the rapier head part of the weft feeding sword 2, the wire feeding clamp 2-1 comprises a first clamping plate 2-1-1, a second clamping plate 2-1-2, a hinge shaft 2-1-3 and a tension spring 2-1-4, the first clamping plate 2-1-1 and the second clamping plate 2-1-2 are installed in a cross hinged mode through the hinge shaft 2-1-3, the tension spring 2-1-4 is connected between one side face of the first clamping plate 2-1-1 opposite to the left side opening of the second clamping plate 2-1-2, the openings are formed on the right side of the first clamping plate 2-1-1 and the second clamping plate 2-2 for clamping the end head of the weft yarn 7, the side wall at the bottom of the weft feeding sword 2 is provided with a sliding groove 2-2 along the weft finding direction, the left loom frame 1 is provided with a transverse plate 12 positioned below the weft feeding sword 2, and the wire feeding clamp 2-1 is fixedly arranged on the left clamping plate 12, and the wire feeding clamp 2-1 extends to the positioning column 2-13 when the two weft feeding clamp 2-1 is positioned vertically, and the wire feeding clamp 2-1 is positioned in the inner cavity 13 is extended, and the wire feeding clamp 2-1 is positioned vertically between the two weft feeding clamp clamps 2-1 and the weft feeding clamp 2. So that the wire feeding clamp 2-1 pulls the first clamping plate 2-1-1 and the second clamping plate 2-1-2 through the tension spring 2-1-4 in the process of delivering the weft yarn 7 by the weft feeding sword 2, the wire feeding clamp 2-1 is closed to clamp the end of the weft yarn 7, after the weft feeding sword 2 finishes the delivery action and resets leftwards, the wire feeding clamp 2-1 is opened by clamping the left openings of the two wire feeding clamps 2-1 through the positioning column 13, after one weft finding operation is finished, the new end formed by cutting the weft yarn 7 by the weft cutting mechanism 6 naturally sags between the right openings of the two wire feeding clamps 2-1 under the action of gravity, and when the next weft finding operation starts, the weft feeding sword 2 moves rightwards to drive the two wire feeding clamps 2-1 to separate from the positioning column 13, and then the two wire feeding clamps 2-1 clamp the end of the weft yarn 7 under the action of the tension spring 2-1-4; the two wire feeding clamps 2-1 clamp the end of the weft yarn 7 through the first clamping plate 2-1-1 and the second clamping plate 2-1-2 to finish the delivery action of the weft yarn 7, so that the situation that the weft yarn 7 is excessively clamped at the rapier head of the weft feeding rapier 2 is avoided, and the problem that the weft yarn 7 is easily broken when the weft yarn 7 is delivered is avoided.
In one embodiment, an anti-slip rubber pad 2-1-5 is respectively arranged on one side surface of the first clamping plate 2-1-1 of the wire feeding clamp 2-1 opposite to the right opening of the second clamping plate 2-1-2, so that the friction force between the two wire feeding clamps 2-1 and the end heads of the weft yarns 7 can be increased through the anti-slip rubber pad 2-1-5, and on the premise that the end heads of the weft yarns 7 can be hooked by the hook plate 3-1 and normally separated from the two wire feeding clamps 2-1, the slipping of the end heads of the weft yarns 7 from the two wire feeding clamps 2-1 in the delivery process of the weft yarns 7 can be effectively avoided, and in a specific application, the anti-slip rubber pad 2-1-5 can be made of silica gel; and the antiskid rubber cushion 2-1-5 is of a triangular prism structure, when the wire feeding clamp 2-1 is closed to clamp the end of the weft yarn 7, one side surface of the two antiskid rubber cushions 2-1-5, which is opposite, is in a parallel state, so that excessive clamping of the end of the weft yarn 7 by the two wire feeding clamps 2-1 can be effectively avoided, and on the other hand, the end of the weft yarn 7 can be clamped stably by the two wire feeding clamps 2-1, and simultaneously, the end of the weft yarn 7 can be hooked from the two wire feeding clamps 2-1 conveniently by the hook plate 3-1.
Optionally, the outer end of the rapier head part of the weft feeding rapier 2 is subjected to round corner passivation treatment, so that the weft yarn 7 is smoothly contacted with the outer end of the rapier head part of the weft feeding rapier 2 in the process of delivering the weft yarn 7 by the weft feeding rapier 2, the weft yarn 7 can be effectively prevented from being worn by the rapier head part of the weft feeding rapier 2, further, the smooth completion of weft finding action can be ensured, and meanwhile, the fabric quality can be ensured.
In this embodiment, the weft yarn frame 4 includes a frame body 4-1, the frame body 4-1 is in an L-shaped structure, a long side of the frame body 4-1 is fixedly installed on the left loom frame 1, a short side of the frame body 4-1 is arranged above a right opening of the wire feeding clamp 2-1, a threading hole 4-1 is horizontally formed in the short side of the frame body 4-1 at a position on the same plane with a central line of the right opening of the wire feeding clamp 2-1, a weft yarn 7 to be introduced penetrates through the loom frame 1 and is threaded into the threading hole 4-1-1 of the weft yarn frame 4, so that the frame body 4-1 can support the weft yarn 7, and the threading hole 4-1-1 can position the weft yarn 7, so that new ends formed by cutting the weft yarn 7 by the weft cutting mechanism 6 after completion of each weft finding operation are all located between the right openings of the two wire feeding clamps 2-1, and the two weft feeding clamps 2-1 on the wire feeding clamp 2-1 can clamp the weft yarn 7 accurately at the beginning of the next weft finding operation.
In one embodiment, a positioning guide groove 4-2 is vertically installed on the short side of the frame body 4-1 at a position below the threading hole 4-1-1, and the right side of the positioning guide groove 4-2 is opened, an air nozzle 4-3 is installed on the upper end of the short side of the frame body 4-1 at a position above the positioning guide groove 4-2, and the axis of the air nozzle 4-3 and the axis of the threading hole 4-1 are in the same vertical plane, so that a new end formed after the weft yarn 7 is sheared by the weft shearing mechanism 6 can be blown once through the air nozzle 4-3, and a positioning and guiding effect is formed on the end of the weft yarn 7 drooping through the positioning guide groove 4-2, thereby ensuring that the end of the weft yarn 7 droops and accurately enters between the right side openings of the two thread clamps 2-1.
Optionally, the inner wall of the right end outlet of the threading hole 4-1-1 is subjected to round corner passivation treatment, so that the weft yarn 7 is smoothly contacted with the right end outlet of the threading hole 4-1-1 in the process of delivering the weft yarn 7 by the weft feeding sword 2 and the process of blowing the end head of the weft yarn 7 by the air nozzle 4-3, the weft yarn 7 can be effectively prevented from being worn by the right end outlet of the threading hole 4-1-1, the weft yarn finding action can be further ensured to be successfully completed, and the fabric quality can be ensured.
In this embodiment, the clamping mechanism 5 includes a first dual-shaft cylinder 5-1, pneumatic fingers 5-2, a clamping seat 5-3, and a clamping rod 5-4, the first dual-shaft cylinder 5-1 is horizontally mounted on a support plate 11, the pneumatic fingers 5-2 are horizontally mounted on the output ends of the first dual-shaft cylinder 5-1, the clamping seats 5-3 are respectively mounted on the two output ends of the pneumatic fingers 5-2, the clamping rods 5-4 for clamping the weft yarn 7 are respectively horizontally mounted on the two clamping seats 5-3, the two clamping mechanisms 5 on the loom frames 1 on the left and right sides of the loom have the same structure and the same mounting height, during the weft yarn 7 delivery process of the weft feeding sword 2, the two first dual-shaft cylinders 5-1 shrink to drive the pneumatic fingers 5-2 to be away from the weft feeding sword 2 and the weft receiving sword 3, so as to avoid the interference of the pneumatic fingers 5-2 on the weft yarn 7, after the weft receiving action of the weft yarn 7 is completed by the weft receiving sword 3, the two first double-shaft cylinders 5-1 stretch to drive the pneumatic fingers 5-2 to approach the weft feeding sword 2 and the weft receiving sword 3, then the two pneumatic fingers 5-2 fold and drive the clamping rods 5-4 to close through the clamping seats 5-3 to clamp the two ends of the weft yarn 7, thereby ensuring that the weft yarn 7 is in a horizontal and straight state after the weft yarn 7 is received by the weft receiving sword 3, simultaneously ensuring that the weft yarn 7 on the two clamping mechanisms 5 and the weft yarn 7 on the weft yarn frame 4 are on the same horizontal line parallel to the reed, avoiding the weft yarn 7 from being in an inclined state before being beaten by the reed, thereby effectively avoiding the condition that the weft yarn 7 is still loose after being beaten by the reed, eliminating the loosening of the weft yarn, the hidden trouble of unstable interweaving structure.
In one embodiment, the anti-slip rubber coating 5-5 is disposed on the outer side of the clamping rod 5-4, so that friction force between the two clamping mechanisms 5 and the weft yarn 7 can be increased through the anti-slip rubber coating 5-5, stable clamping of the weft yarn 7 by the two clamping mechanisms 5 can be ensured after the weft yarn 7 is cut by the weft cutting mechanism 6, and the clamping rod 5-4 and the anti-slip rubber coating 5-5 are square plate structures, so that contact area between the anti-slip rubber coating 5-5 and the weft yarn 7 can be increased, and clamping stability of the two clamping mechanisms 5 to the weft yarn 7 can be further improved.
In this embodiment, the weft cutting mechanism 6 includes a second double-shaft cylinder 6-1 and a pneumatic scissors 6-2, the second double-shaft cylinder 6-1 is disposed at a position close to the left side of the clamping mechanism 5 of the left loom frame 1, the second double-shaft cylinder 6-1 is horizontally mounted on the supporting plate 11, the pneumatic scissors 6-2 are horizontally mounted on the output end of the second double-shaft cylinder 6-1, the mounting height of the pneumatic scissors 6-2 is the same as the mounting height of the two clamping mechanisms 5, during the weft yarn 7 is delivered by the weft sending rapier 2, the second double-shaft cylinder 6-1 contracts to drive the pneumatic scissors 6-2 to be far away from the weft sending rapier 2 and the weft receiving rapier 3, so as to avoid interference of the pneumatic scissors 6-2 on the weft yarn 7, after the weft receiving action of the weft receiving rapier 3 is completed, the second double-shaft cylinder 6-1 stretches to drive the pneumatic scissors 6-2 to be close to the weft sending rapier 2 and the weft receiving rapier 3, then the pneumatic scissors 6-2 act to cut the weft yarn 7, two ends of the cut weft yarn 7 are clamped by the two clamping mechanisms 5, and the weft 7 are then woven in a straight state, and the weft 7 is woven through a shed is woven, and the weft 7 is cut in a straight state, and a weft shed is formed; according to the embodiment, the two clamping mechanisms 5 are used for clamping the two ends of the weft yarn 7, the weft yarn 7 is cut off by the weft cutting mechanism 6, the weft yarn 7 is prevented from being in an inclined state when being tightly clamped by the reed, meanwhile, the weft yarn 7 is straightened by the two clamping mechanisms 5, the situation that the weft yarn is still loose after being tightly clamped by the reed can be effectively avoided, and the hidden danger that the weft yarn is loose and the interweaving structure is unstable is eliminated.
The weft feeding cylinder and the weft receiving cylinder are used for respectively driving the weft feeding sword and the weft receiving sword to respectively execute weft feeding action and weft receiving action, and the weft feeding clamp is arranged at the rapier head part of the weft feeding sword and used for clamping the weft ends when the weft is fed, so that the situation that the weft is excessively clamped at the rapier head part of the weft feeding sword is avoided, the problem that the weft is easily broken when the weft is connected is avoided, two clamping mechanisms are arranged for clamping the two ends of the weft when the weft receiving action is completed by the weft receiving sword, and the weft is sheared by the weft shearing mechanism, so that the weft is in a horizontal and straight state before being tightly clamped by the reed, the weft is prevented from being in an inclined state before being tightly clamped by the reed, the situation that the weft is still loose after being tightly clamped by the reed is avoided, the hidden danger that the weft is loose and the interweaving structure is unstable is eliminated, the weft finding efficiency is high, the weft finding action is stable and reliable, the weft finding effect is good, and the quality of the fabric can be effectively improved.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (9)
1. A weft finding mechanism of a loom, which is characterized in that: the weft finding mechanism of the loom comprises a loom frame (1), a weft feeding sword (2), a weft receiving sword (3), a weft frame (4), a clamping mechanism (5) and a weft shearing mechanism (6), wherein the weft feeding sword (2) and the weft receiving sword (3) are respectively arranged on the loom frame (1) at the left side and the right side of the loom, the rear end of the weft feeding sword (2) penetrates through the left loom frame (1) and is horizontally arranged on a connecting plate (8), the connecting plate (8) is fixedly connected with the output end of a weft feeding cylinder (9) arranged on the left loom frame (1), the weft receiving sword (3) is fixedly arranged on the output end of a weft receiving cylinder (10), the weft receiving cylinder (10) is obliquely downwards arranged on the right loom frame (1), two wire clamping ends (2-1) for clamping the weft yarn (7) when the weft yarn (7) is delivered are respectively and symmetrically arranged on the connecting plate (2-1), and the two wire clamping ends (2-1) are respectively symmetrically arranged on the upper ends of the weft feeding sword (2) and the weft receiving sword (2) and the two hook plates (3) are conveniently hooked between the weft feeding sword (3) and the weft receiving sword (1) when the weft receiving sword (3) is hooked on the hook plate (1;
weft frame (4) that are used for supporting woof (7) are provided with above weft feeding sword (2), woof frame (4) are installed on left loom frame (1), woof (7) that wait to introduce run through left loom frame (1) and wear to establish on woof frame (4), install respectively through extension board (11) on loom frame (1) of loom left and right sides a fixture (5), two fixture (5) are used for holding the both ends of woof (7) when looking for the latitude completion, and be close to the fixture (5) left side of left loom frame (1) and be provided with cut weft (6) of installing on extension board (11), cut weft (6) and be used for cutting woof (7) when looking for the latitude completion, fixture (5), cut weft (6) are the same with the installation height of woof frame (4), and connect weft (7) to receive the back on loom frame (1) and install on weft (7) and be in the same vertical plane of fixture (5), weft (6) and weft (4) of weft.
2. A weft finding mechanism for a loom according to claim 1, wherein: the weft feeding rapier (2) is of a hollow square tube structure with openings on the right end face and the front side and the rear side, the wire feeding clamp (2-1) is symmetrically arranged on the upper inner side wall and the lower inner side wall of the rapier head part of the weft feeding rapier (2), the wire feeding clamp (2-1) comprises a first clamping plate (2-1-1), a second clamping plate (2-1-2), a hinge shaft (2-1-3) and a tension spring (2-1-4), the first clamping plate (2-1-1) and the second clamping plate (2-1-2) are installed in a cross hinged mode through the hinge shaft (2-1-3), the tension spring (2-1-4) is connected between one side face opposite to the opening on the left side of the second clamping plate (2-1-2), the opening is formed on the right side of the first clamping plate (2-1-1) and the second clamping plate (2-1-2) and used for clamping the end head of the weft feeding rapier (7), a chute (2-2) is formed in the weft feeding side wall on the bottom side of the weft feeding rapier (2) along the weft finding direction, the left side (2-1-1) is arranged on the frame (2) and the weft feeding rapier (2) is arranged on the position of the frame (12) in a vertical position of the frame (12), when the two thread feeding clamps (2-1) clamp the weft thread (7), the positioning column (13) is clamped into the left opening of the thread feeding clamp (2-1) to open the thread feeding clamp (2-1).
3. A weft finding mechanism for a loom as claimed in claim 2, wherein: the weft feeding rapier is characterized in that an anti-slip rubber pad (2-1-5) is arranged on one side surface of a first clamping plate (2-1-1) of the wire feeding clamp (2-1) opposite to a right opening of a second clamping plate (2-1-2), the anti-slip rubber pad (2-1-5) is of a triangular prism structure, when the wire feeding clamp (2-1) is closed to clamp the end of a weft yarn (7), one side surface of the two anti-slip rubber pads (2-1-5) opposite to each other is in a parallel state, and the outer end of a rapier head of the weft feeding rapier (2) is subjected to round corner passivation.
4. A weft finding mechanism for a loom according to claim 1, wherein: the weft yarn frame (4) comprises a frame body (4-1), the frame body (4-1) is of an L-shaped structure, the long side of the frame body (4-1) is fixedly arranged on a left loom frame (1), the short side of the frame body (4-1) is arranged above a right opening of a yarn feeding clamp (2-1), a threading hole (4-1-1) is horizontally formed in the position, on the short side of the frame body (4-1), of the frame body, which is on the same plane with the center line of the right opening of the yarn feeding clamp (2-1), and weft yarns (7) to be led in penetrate through the loom frame (1) and are arranged in the threading hole (4-1-1) of the weft yarn frame (4).
5. A loom pick-finding mechanism as claimed in claim 4 wherein: the positioning guide groove (4-2) is vertically arranged at the position, below the threading hole (4-1), on the short side of the frame body (4-1), and the right side of the positioning guide groove (4-2) is opened, the air nozzle (4-3) is arranged at the position, above the positioning guide groove (4-2), on the upper end of the short side of the frame body (4-1), and the axis of the air nozzle (4-3) and the axis of the threading hole (4-1-1) are in the same vertical plane.
6. A loom weft finding mechanism as claimed in claim 5, wherein: and the inner wall at the outlet of the right end of the threading hole (4-1-1) is subjected to round corner passivation.
7. A weft finding mechanism for a loom according to claim 1, wherein: the clamping mechanism (5) comprises a first double-shaft air cylinder (5-1), pneumatic fingers (5-2), clamping seats (5-3) and clamping rods (5-4), wherein the first double-shaft air cylinder (5-1) is horizontally arranged on a support plate (11), the pneumatic fingers (5-2) are horizontally arranged at the output ends of the first double-shaft air cylinder (5-1), the clamping seats (5-3) are respectively arranged at the two output ends of the pneumatic fingers (5-2), the clamping rods (5-4) used for clamping weft yarns (7) are respectively and horizontally arranged on the two clamping seats (5-3), and the two clamping mechanisms (5) on the loom frame (1) on the left side and the right side of the loom are identical in structure and mounting height.
8. A loom pick-finding mechanism as claimed in claim 7 wherein: the anti-skid rubber coating (5-5) is arranged on the outer side of the clamping rod (5-4), and the clamping rod (5-4) and the anti-skid rubber coating (5-5) are of square plate structures.
9. A weft finding mechanism for a loom according to claim 1, wherein: the weft cutting mechanism (6) comprises a second double-shaft air cylinder (6-1) and pneumatic scissors (6-2), the second double-shaft air cylinder (6-1) is arranged at the position close to the left side of the clamping mechanism (5) of the left loom frame (1), the second double-shaft air cylinder (6-1) is horizontally arranged on the support plate (11), the pneumatic scissors (6-2) are horizontally arranged at the output end of the second double-shaft air cylinder (6-1), and the installation height of the pneumatic scissors (6-2) is identical with that of the two clamping mechanisms (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311521934.5A CN117248318B (en) | 2023-11-15 | 2023-11-15 | Weft finding mechanism of loom |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311521934.5A CN117248318B (en) | 2023-11-15 | 2023-11-15 | Weft finding mechanism of loom |
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| CN117248318A true CN117248318A (en) | 2023-12-19 |
| CN117248318B CN117248318B (en) | 2024-02-23 |
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| CN208533028U (en) * | 2018-06-25 | 2019-02-22 | 海宁市金涛丝绸布艺有限公司 | A kind of weft-recepting sword head |
| CN111945281A (en) * | 2020-08-31 | 2020-11-17 | 必佳乐（苏州工业园区）纺织机械有限公司 | Mechanical weft shearing device |
| CN113293485A (en) * | 2021-05-26 | 2021-08-24 | 绍兴市嘉纬电子科技有限公司 | High-speed wear-resisting type weaving sword head |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH469114A (en) * | 1967-03-17 | 1969-02-28 | Elitex Zavody Textilniho | Method and device for cutting wefts on rapier looms |
| CN2255436Y (en) * | 1995-12-21 | 1997-06-04 | 张善德 | Rapier head for rapier loom |
| CN1168428A (en) * | 1996-02-27 | 1997-12-24 | 新齿轮股份公司 | Improved giver gripper for gripper loom |
| CN1995516A (en) * | 2006-01-06 | 2007-07-11 | 苏尔特克斯股份公司 | Feeding gripper for a shuttleless weaving loom |
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| CN113293485A (en) * | 2021-05-26 | 2021-08-24 | 绍兴市嘉纬电子科技有限公司 | High-speed wear-resisting type weaving sword head |
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| CN117248318B (en) | 2024-02-23 |
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