CN108866766B - Weft yarn cutting device for rapier loom - Google Patents
Weft yarn cutting device for rapier loom Download PDFInfo
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- CN108866766B CN108866766B CN201811068033.4A CN201811068033A CN108866766B CN 108866766 B CN108866766 B CN 108866766B CN 201811068033 A CN201811068033 A CN 201811068033A CN 108866766 B CN108866766 B CN 108866766B
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- fixing arm
- guide hook
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- yarn
- fixing
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- 238000005520 cutting process Methods 0.000 title claims abstract description 31
- 238000003825 pressing Methods 0.000 claims abstract description 42
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 230000007704 transition Effects 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000005192 partition Methods 0.000 claims description 28
- 239000000428 dust Substances 0.000 claims description 14
- 210000000078 claw Anatomy 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 3
- 239000000463 material Substances 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 description 16
- 238000010168 coupling process Methods 0.000 description 16
- 238000005859 coupling reaction Methods 0.000 description 16
- 125000006850 spacer group Chemical group 0.000 description 10
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
A weft yarn cutting device for a rapier loom comprises a base, wherein a yarn guiding hook fixing arm cavity is arranged at the rear side of the right end of the base; the first yarn guide hook and the second yarn guide hook are provided with a first yarn guide hook cavity and a second yarn guide hook cavity, the left end of the first yarn guide hook is provided with a first yarn guide hook fixing arm, the left end of the second yarn guide hook is provided with a second yarn guide hook fixing arm, and the disc blade is positioned between the first yarn guide hook and the second yarn guide hook; the left end of the yarn pressing reed is fixed with the base, the right end of the yarn pressing reed is a free end, and the end face of the yarn pressing reed, which protrudes out of the base, extends to the disc blade; a motor, characterized in that: the yarn guide device further comprises a disc blade transition connection mechanism which is positioned between the second yarn guide hook and the motor, wherein the disc blade transition connection mechanism, together with the first yarn guide hook fixing arm and the second yarn guide hook fixing arm, is fixed with the base, and the disc blade and the motor establish a transmission connection relationship on the disc blade transition connection mechanism. The radial force applied to the motor shaft is reduced, so that the service life of the motor is ensured; the rotary cutting adaptability to weft yarns of different materials and different counts is strong; simple structure and low cost.
Description
Technical Field
The invention belongs to the technical field of looms, and particularly relates to a weft yarn cutting device for a rapier loom.
Background
The weft cutting device described above is conventionally referred to as a "weft cutting device". Rapier looms are shuttleless looms that use a reciprocating rapier (i.e., a rapier) to fork in or pinch a weft yarn and introduce the weft yarn into a fell. The rapier loom is characterized in that weft is supplied outside the loom, weft is actively controlled by the rapier head, weft insertion quality is high, and the rapier loom has high weaving speed, high automation degree and strong adaptability to varieties in an active weft insertion mode, so that weft insertion requirements of various yarns can be met, and the rapier loom has obvious advantages which cannot be compared with other looms in multicolor weaving, such as fabrics with more than ten colors or even more multicolor weft yarns, so that the rapier loom is a textile machine favored in the industry at present.
As is known in the art, rapier looms are equipped with the aforementioned weft cutting device, which works by rapidly cutting the weft yarn after the weft insertion rapier (i.e. "weft insertion rapier") grips the weft yarn, and requires a very precise time for cutting the weft yarn.
The weft cutting device for the rapier loom in the prior art realizes the cutting action by the reciprocating motion of the upper blade and the lower blade, and is typically "a loom weft scissors" recommended by CN202054987U, a knife type weft scissors "provided by CN202284239U, and the like, and the weft cutting device in the structure is deficient in that the weft cutting device can only adapt to the weft with small cutting material and count difference and has a relatively complex structure. If weft yarns with great differences in materials and counts are woven simultaneously, the shearing time for different weft yarns is set, and weft shears driven by a servo motor are generally adopted, but the cost is high and the control is complex.
The structure of the disc blade driven by the high-speed motor with the rotating speed up to 20000rpm can adapt to cutting of weft yarns with great differences in materials and counts, and is typically a 'rotary weft yarn scissor device of a loom' disclosed in Chinese patent publication No. CN207619605U, and the technical effect recorded in the 0015 section of the specification can be objectively honored by the scheme of the patent.
Furthermore, as described in the industry, the motor for driving the blade to move can only select the micro high-speed motor no matter what way the structure of the rapier loom is adopted, and the stress of the motor shaft of the micro high-speed motor is weak, so that the motor shaft cannot bear larger radial force. When it is desired to cut a relatively specific yarn, such as a thick yarn, a knot yarn, a chenille yarn, a rope yarn, etc., the blade is subjected to a relatively large radial force due to the relatively thick and hard yarn, and thus if the disc blade is directly provided on the motor shaft of the motor as taught in the aforementioned CN207619605U, the aforementioned relatively large radial force is entirely transmitted to the motor shaft, causing damage to the motor and/or shortening the service life of the motor. The technical solutions to be described below are created in this context.
Disclosure of Invention
The object of the present invention is to provide a weft yarn cutting device for a rapier loom, which is useful for satisfying the requirements for cutting thick and hard yarns such as thick yarns, knots, chenille yarns and rope yarns, and for significantly reducing the influence of the radial force generated by a blade when cutting weft yarns on the motor, so as to ensure the service life of the motor.
The invention is based on the task of achieving a weft cutting device for a rapier loom, comprising a base, wherein the base is fixed on the rapier loom in a use state, and a yarn guiding hook fixing arm cavity is formed at the rear side of the right end of the base; the first yarn guide hook and the second yarn guide hook are respectively corresponding to each other, the first yarn guide hook is provided with a first yarn guide hook cavity, the second yarn guide hook is provided with a second yarn guide hook cavity, the first yarn guide hook cavity and the second yarn guide hook cavity are respectively corresponding to each other, the left end of the first yarn guide hook extends to form a first yarn guide hook fixing arm, the left end of the second yarn guide hook extends to form a second yarn guide hook fixing arm, the first yarn guide hook fixing arm and the second yarn guide hook fixing arm are fixed with the base at positions corresponding to the yarn guide hook fixing arm cavities, and the disc blade is positioned between the first yarn guide hook and the second yarn guide hook; the yarn pressing reed corresponds to the upper part of the base, the left end of the yarn pressing reed is fixed with the base, the right end of the yarn pressing reed is a free end, the right end face of the yarn pressing reed stretches out of the base and extends to the disc blade, a yarn pressing reed groove is formed in the right end of the yarn pressing reed in a state parallel to the long side direction of the yarn pressing reed, and the disc blade corresponds to the yarn pressing reed groove; the motor for driving the disc blade to move is characterized by further comprising a disc blade transitional connection mechanism for enabling the disc blade to be in transmission connection with a motor shaft of the motor, wherein the disc blade transitional connection mechanism is positioned between the second yarn guide hook and the motor, and the disc blade transitional connection mechanism, the second yarn guide hook fixing arm and the first yarn guide hook fixing arm are fixed with the base at positions corresponding to cavities of the yarn guide hook fixing arms, and the disc blade and the motor are in transmission connection on the disc blade transitional connection mechanism.
In a specific embodiment of the present invention, the disc blade transitional coupling mechanism includes a motor fixing seat, a motor fixing seat fixing arm, a disc blade shaft connecting seat, a disc blade shaft, a radial force bearing and a spacer disc, a bearing cavity is formed at the central position of the front end of the motor fixing seat, a disc blade shaft connecting seat cavity is formed at the central position of the rear end of the motor fixing seat, the bearing cavity and the disc blade shaft connecting seat cavity are communicated with each other, the motor fixing seat fixing arm is formed by directly extending from the left side of the motor fixing seat and is perpendicular to the motor fixing seat, the motor fixing seat fixing arm corresponds to the rear side of the second guide hook fixing arm, the motor fixing seat fixing arm, together with the second guide hook fixing arm, and the first guide hook fixing arm are fixed with the rear side of the right end of the base at the position corresponding to the guide hook fixing arm cavity of the base, the disc blade shaft connecting seat is located in the disc blade shaft connecting seat cavity, the disc blade shaft is formed by extending from the central position of the front end face of the disc blade shaft connecting seat, the front end of the disc blade shaft is formed by extending from the central position of the front end face of the disc blade shaft connecting seat, the disc blade shaft is matched with the disc blade sleeve at the radial position of the disc blade corresponding to the bearing cavity at the front end of the disc blade, the spacer disc blade is fixed by the first guide shaft, and the spacer disc shaft is matched with the front end of the disc blade nut, and the disc shaft is matched with the disc shaft, the motor is fixed with the motor fixing seat at a position corresponding to the rear part of the disc blade shaft connecting seat cavity of the motor fixing seat, and the motor shaft is in transmission connection with the rear end of the disc blade shaft connecting seat.
In another specific embodiment of the present invention, the motor fixing base fixing arm is provided with a pair of motor fixing base fixing arm locating pin holes and a motor fixing base fixing arm screw hole, the motor fixing base fixing arm screw hole is located between the pair of motor fixing base fixing arm locating pin holes and is provided with a fixing arm screw, the first yarn guiding hook fixing arm is provided with a pair of first yarn guiding hook fixing arm locating pin holes and a first yarn guiding hook fixing arm screw hole, the first yarn guiding hook fixing arm screw hole is located between the pair of first yarn guiding hook fixing arm locating pin holes, the second yarn guiding hook fixing arm is provided with a pair of second yarn guiding hook fixing arm locating pin holes and a second yarn guiding hook fixing arm screw hole, the second yarn guiding hook fixing arm screw hole is located between the pair of second yarn guiding hook fixing arm locating pin holes, a pair of first yarn guide hook fixing arm locating pin shaft holes and a pair of second yarn guide hook fixing arm locating pin shaft holes are corresponding to the pair of motor fixing seat fixing arm locating pin shaft holes, the first yarn guide hook fixing arm screw hole and the second yarn guide hook fixing arm screw hole are corresponding to the motor fixing seat fixing arm screw hole, a yarn guide hook fixing arm partition plate is arranged between the corresponding first yarn guide hook fixing arm and the corresponding second yarn guide hook fixing arm, a pair of yarn guide hook fixing arm partition plate locating pin shaft holes and a yarn guide hook fixing arm partition plate screw hole are arranged on the yarn guide hook fixing arm partition plate, the yarn guide hook fixing arm partition plate screw hole is positioned between the pair of yarn guide hook fixing arm partition plate locating pin shaft holes, and the pair of yarn guide hook fixing arm partition plate locating pin shaft holes are corresponding to the pair of motor fixing seat fixing arm locating pin shaft holes, the yarn guide hook fixing arm partition board screw hole corresponds to the motor fixing seat fixing arm screw hole, a yarn guide hook fixing arm cavity wall screw hole is formed in the position corresponding to the motor fixing seat fixing arm screw hole, a pair of yarn guide hook fixing arm positioning pin shafts are inserted in the position corresponding to the pair of second yarn guide hook fixing arm positioning pin shaft holes, the front ends of the pair of yarn guide hook fixing arm positioning pin shafts are fixed with the pair of first yarn guide hook fixing arm positioning pin shaft holes after penetrating through the pair of yarn guide hook fixing arm partition board positioning pin shaft holes, the rear ends of the pair of yarn guide hook fixing arm positioning pin shafts are fixed with the pair of motor fixing seat fixing arm positioning pin shaft holes, and the fixing arm screw rod sequentially penetrates through the second yarn guide hook fixing arm screw hole, the yarn guide hook fixing arm partition board screw hole and the first yarn guide hook fixing arm screw hole to be screwed into the yarn guide hook fixing arm cavity wall screw hole.
In a further specific embodiment of the invention, an internal thread of the motor fixing seat is formed on the motor fixing seat and positioned at the rear of the cavity of the disc blade shaft connecting seat, a motor fixing thread head is formed at the central position of the front end of the motor, an external thread of the motor fixing thread head is formed on the outer wall of the motor fixing thread head, and the external thread of the motor fixing thread head is in threaded connection with the internal thread of the motor fixing seat.
In still another specific embodiment of the present invention, a motor shaft connecting hole is formed at a central position of the rear end of the disc blade shaft connecting seat, and a motor shaft of the motor is in transmission connection with the disc blade shaft connecting seat at a position corresponding to the motor shaft connecting hole.
In still another specific embodiment of the present invention, the motor shaft connecting hole is a square hole, and a buffer bushing is disposed in the motor shaft connecting hole, the cross section of the motor shaft is square, and the buffer bushing is inserted into the motor shaft, and the buffer bushing is rubber or nylon.
In a further specific embodiment of the present invention, a disk blade shaft external thread is formed at the front end of the disk blade shaft, the disk blade limiting nut is screwed at the front end of the disk blade shaft at a position corresponding to the disk blade shaft external thread, a disk blade center hole is formed at the center position of the disk blade, and the disk blade center hole is sleeved at the front end of the disk blade shaft at a position corresponding to the rear side of the disk blade limiting nut.
In a further specific embodiment of the invention, a dust cover is fixed at the right end of the base and at a position corresponding to the disc blade limiting nut, and the rear end of the dust cover extends into the first yarn guiding hook cavity and forms a dust cover cavity, and the disc blade limiting nut is positioned in the dust cover cavity.
In a still further embodiment of the invention, a yarn pressing claw is formed at the right end of the yarn pressing reed and at positions on both sides of the yarn pressing reed groove.
In still another specific embodiment of the present invention, the base is fixed above the base fixing plate by a pair of base fixing bolts, and a pair of buffer washers are disposed between the base and the base fixing plate, and are respectively sleeved on the pair of base fixing bolts, and the base fixing plate is provided with a fixing plate screw hole, and the fixing plate screw hole is fixed with the rapier loom by a fixing plate screw hole fixing bolt.
The technical scheme provided by the invention has the technical effects that: because the disc blade transition connecting mechanism is additionally arranged, the disc blade and the motor shaft of the motor are in transmission connection by the disc blade transition connecting mechanism, so that the direct connection between the disc blade and the motor shaft in the prior art is changed into indirect connection, and the larger radial force generated when the disc blade cuts the thick and hard yarn is born by the radial force bearing of the disc blade transition connecting mechanism, the radial force born by the motor shaft is obviously reduced, and the service life of the motor is ensured; because the structure form of mechanical driving which realizes shearing by the reciprocating motion of the upper blade and the lower blade in the prior art is abandoned, and the weft yarn is rotary-cut by the disc blade by utilizing the motor which moves at high speed, different shearing time is not required to be set for different weft yarns, and the rotary-cut machine has ideal adaptability to the rotary cutting of weft yarns with different materials and different counts; because the whole structure is simple, the manufacturing and the assembly are convenient, and the cost is reduced.
Drawings
Fig. 1 is a structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic front side view of fig. 1.
Fig. 3 is a detailed structural view of the disk blade shaft connection seat and the motor fixing seat of the disk blade transition connection mechanism shown in fig. 1 assembled.
Detailed Description
In order to make the technical spirit and advantages of the present invention more clearly understood, the applicant will now make a detailed description by way of example, but the description of the examples is not intended to limit the scope of the invention, and any equivalent transformation made merely in form, not essentially, according to the inventive concept should be regarded as the scope of the technical solution of the present invention.
In the following description, all concepts related to the directions or azimuths of up, down, left, right, front and rear are exemplified by the position state of fig. 1, and thus the present invention is not to be construed as being particularly limited to the technical solutions provided by the present invention.
Referring to fig. 1 and 2, there is shown a base 1, the base 1 is fixed to a rapier loom, i.e., a frame of the rapier loom in a use state, and a notch is formed at a rear side of a right end of the base 1, and the notch is formed as a guide hook fixing arm cavity 11; a first guide hook 2, a second guide hook 3 and a disc blade 4 are shown, the first guide hook 2 and the second guide hook 3 correspond to each other, the first guide hook 2 is formed with a first guide hook cavity 21, the second guide hook 3 is formed with a second guide hook cavity 31, the first and second guide hook cavities 21, 31 also correspond to each other in front of and behind each other, a first guide hook fixing arm 22 extends from the left end of the first guide hook 2, a second guide hook fixing arm 32 extends from the left end of the second guide hook 3, the first guide hook fixing arm 22 and the second guide hook fixing arm 32 are fixed with the base 1 at a position corresponding to the guide hook fixing arm cavity 11, and the disc blade 4 is positioned between the first and second guide hooks 2, 3; a yarn pressing reed 5 is shown, the yarn pressing reed 5 corresponds to the upper side of the base 1 and the left end of the yarn pressing reed 5 is fixed with the base 1 by a pair of yarn pressing reed fixing screws 53 at positions corresponding to a pair of yarn pressing reed fixing screw holes 17a preset on the base 1, while the right end of the yarn pressing reed 5 is constituted as a free end and the right end face protruding out of the base 1 extends to the disc blade 4, a yarn pressing reed groove 51 is opened at the right end of the yarn pressing reed 5 in a state parallel to the long side direction of the yarn pressing reed 5, the disc blade 4 corresponds to the yarn pressing reed groove 51; a motor 6 for driving the aforementioned disc blade 4 in motion is shown.
Preferably, a pair of pins 54 is provided at the left end of the yarn pressing reed 5, and a pair of pin holes 17b is provided in the base 1 at positions corresponding to the pair of pins 54, and the pair of pins 54 are inserted into the pair of pin holes 17 b. In addition, a yarn pressing spring plate 55 can be added to the yarn pressing spring 5, and the yarn pressing spring plate 55 is positioned below the yarn pressing spring 5.
With continued reference to fig. 1 and 2, as a technical gist of the technical proposal provided by the present invention, the structure system of the weft yarn cutting device for the rapier loom further comprises a disc blade transitional coupling mechanism 7 for establishing a transmission connection relationship between the disc blade 4 and the motor shaft 61 of the motor 6, the disc blade transitional coupling mechanism 7 is positioned between the second yarn guiding hook 3 and the motor 6, and the disc blade transitional coupling mechanism 7, together with the second yarn guiding hook fixing arm 32 and the first yarn guiding hook fixing arm 22, is fixed with the base 1 at a position corresponding to the yarn guiding hook fixing arm cavity 11, and the disc blade 4 and the motor 6 establish the transmission connection relationship on the disc blade transitional coupling mechanism 7.
Referring to fig. 1, the disc blade transitional coupling mechanism 7 includes a motor fixing base 71, a motor fixing base fixing arm 72, a disc blade shaft coupling base 73, a disc blade shaft 74, a radial force bearing 75 and a spacer 76, a bearing cavity 711 is formed at the central position of the front end of the motor fixing base 71, a disc blade shaft coupling base cavity 712 is formed at the central position of the rear end of the motor fixing base 71, the bearing cavity 711 and the disc blade shaft coupling base cavity 712 are communicated with each other, the motor fixing base fixing arm 72 is formed by directly extending from the left side of the motor fixing base 71 and is perpendicular to the motor fixing base 71, the motor fixing base fixing arm 72 corresponds to the rear side of the second guide hook fixing arm 32 and the motor fixing base fixing arm 72 together with the second guide hook fixing arm 32 and the first guide hook fixing arm 22 are fixed with the right rear side of the base 1 at the position corresponding to the guide hook fixing arm cavity 11 of the base 1, the disk blade shaft connecting seat 73 is located in the disk blade shaft connecting seat cavity 712, the disk blade shaft 74 is formed by extending the center position of the front end face of the disk blade shaft connecting seat 73, and the front end of the disk blade shaft 74 is extended between the first and second yarn guiding hooks 2, 3 via the aforementioned second yarn guiding hook cavity 31, the radial force bearing 75 is provided on the aforementioned disk blade shaft 74 and cooperates with the cavity wall of the aforementioned bearing cavity 711, the partition plate 76 is sleeved on the front end of the disk blade shaft 74, the aforementioned disk blade 4 is fixed on the front end of the aforementioned disk blade shaft 74 at the position corresponding to the front side of the aforementioned partition plate 76 and is defined by the disk blade defining nut 741 screwed on the front end of the disk blade shaft 74, the motor 6 is fixed to the motor fixing base 71 at a position corresponding to the rear of the disc blade shaft coupling seat chamber 712 of the motor fixing base 71 and the motor shaft 61 is drivingly coupled to the rear end of the disc blade shaft coupling seat 73.
As shown in fig. 1, the radial force bearing 75 has a pair of spacer rings 751, and the spacer rings 751 are fitted into spacer ring grooves 7111 (shown in fig. 3) formed in the wall of the bearing chamber 711.
The aforementioned disc blade shaft 74 is fixed (the inner ring is rotated) to the inner ring of the radial force bearing 75, and the outer ring of the radial force bearing 75 is engaged with the cavity wall of the bearing cavity 711, and the outer ring is not rotated, so that the engagement of the radial force bearing 75 with the bearing cavity 711 essentially means the interference fit (also referred to as fixing) of the outer ring of the radial force bearing 75 with the cavity wall of the bearing cavity 711.
Continuing to refer to fig. 1, a pair of motor fixing base fixing arm positioning pin holes 721 and a motor fixing base fixing arm screw hole 722 are formed in the motor fixing base fixing arm 72, the motor fixing base fixing arm screw hole 722 is located between the pair of motor fixing base fixing arm positioning pin holes 721 and is provided with a fixing arm screw 7221, a pair of first guide hook fixing arm positioning pin holes 221 and a first guide hook fixing arm screw hole 222 are formed in the first guide hook fixing arm 22, the first guide hook fixing arm screw hole 222 is located between the pair of first guide hook fixing arm positioning pin holes 221, a pair of second guide hook fixing arm positioning pin holes 321 and a second guide hook fixing arm screw hole 322 are formed in the second guide hook fixing arm 32, the second guide hook fixing arm screw hole 322 is located between the pair of second guide hook fixing arm positioning pin shaft holes 321, the pair of first guide hook fixing arm positioning pin shaft holes 221 and the pair of second guide hook fixing arm positioning pin shaft holes 321 correspond to the aforementioned pair of motor fixing base fixing arm positioning pin shaft holes 721, the first guide hook fixing arm screw hole 222 and the second guide hook fixing arm screw hole 322 correspond to the aforementioned motor fixing base fixing arm screw hole 722, and a guide hook fixing arm partition 33 is provided between the corresponding first and second guide hook fixing arms 22, 32, a pair of guide hook fixing arm partition positioning pin shaft holes 331 and a guide hook fixing arm partition screw hole 332 are opened on the guide hook fixing arm partition 33, the guide hook fixing arm partition screw hole 332 is located between the pair of guide hook fixing arm partition positioning pin shaft holes 331, and a pair of guide hook fixing arm spacer positioning pin shaft holes 331 corresponding to the pair of motor fixing base fixing arm positioning pin shaft holes 721, and a guide hook fixing arm spacer screw hole 332 corresponding to the pair of motor fixing base fixing arm screw holes 722, a guide hook fixing arm cavity wall screw hole 111 is formed in the cavity wall of the guide hook fixing arm cavity 11 of the base 1 at a position corresponding to the motor fixing base fixing arm screw hole 722, a pair of guide hook fixing arm positioning pin shafts 3211 are inserted at a position corresponding to the pair of second guide hook fixing arm positioning pin shaft holes 321, the front ends of the pair of guide hook fixing arm positioning pin shafts 3211 are fixed to the pair of first guide hook fixing arm positioning pin shaft holes 221 after passing through the pair of guide hook fixing arm spacer positioning pin shaft holes 331, and the rear ends of the pair of guide hook fixing arm positioning pin shafts 3211 are fixed to the pair of motor fixing arm positioning pin shaft holes 721, and the guide arm screw rod 7221 is screwed into the guide arm cavity wall screw hole 322 through the pair of guide hook fixing arm screw holes 322 and the guide arm screw hole 322 in order.
Referring to fig. 3 and in combination with fig. 1, a motor fixing seat internal screw thread 713 is formed at a position on the motor fixing seat 71 and located at the rear of the disc blade shaft coupling seat chamber 712, a motor fixing screw head 62 is formed at the front center of the motor 6, a motor fixing screw head external screw thread 621 is formed on the outer wall of the motor fixing screw head 62, and the motor fixing screw head external screw thread 621 is screw-coupled with the motor fixing seat internal screw thread 713, thereby fixing the motor 6 at the rear end of the motor fixing seat 71 in a horizontal cantilever state.
As shown in fig. 1, a motor shaft coupling hole 731 is formed at a central position of the rear end of the disc blade shaft coupling seat 73, and the motor shaft 61 of the motor 6 is coupled to the disc blade shaft coupling seat 73 at a position corresponding to the motor shaft coupling hole 731.
In the present embodiment, the motor shaft connection hole 731 is a square hole, and the buffer bush 7311 is provided in the motor shaft connection hole 731, the cross-sectional shape of the motor shaft 61 is a square, and the buffer bush 7311 is inserted, and the buffer bush 7311 is rubber, but nylon or other equivalent materials may be used.
With continued reference to fig. 1, a disk blade shaft external screw 742 is formed at the front end of the disk blade shaft 74, the disk blade limiting nut 741 is screwed to the front end of the disk blade shaft 74 at a position corresponding to the disk blade shaft external screw 742, a disk blade center hole 41 is formed at the center of the disk blade 4, and the disk blade center hole 41 is fitted over the front end of the disk blade shaft 74 at a position corresponding to the rear side of the disk blade limiting nut 741.
As shown in fig. 1 and 3, a dust cover 12 is fixed to the right end of the base 1 at a position corresponding to the disk blade defining nut 741 by a dust cover fixing screw 122 at a position corresponding to a dust cover fixing screw hole 17c provided at the right end of the base 1, the rear end of the dust cover 12 is inserted into the first yarn guide hook chamber 21 and is formed with a dust cover chamber 121, and the disk blade defining nut 741 is located in the dust cover chamber 121.
As shown in fig. 1 and 2, a yarn pressing claw 52 is formed at the right end of the yarn pressing reed 5 at positions on both sides of the yarn pressing reed groove 51.
Preferably, the base 1 is fixed to the upper side of the base fixing plate 14 by a pair of base fixing bolts 13, and a pair of cushion washers 16 are provided between the base 1 and the base fixing plate 14, the cushion washers 16 are respectively sleeved on the base fixing bolts 13, the base fixing plate 14 is provided with fixing plate screw holes 141, and the fixing plate screw holes 141 are fixed to the rapier loom, that is, to the frame of the rapier loom by fixing plate screw hole fixing bolts.
Since the specific installation of the present invention on a rapier loom, the rapier weft insertion process and the corresponding mechanism of action belong to known techniques, for example, see the patent literature mentioned in the background section above by the applicant, the applicant will not be described in detail.
In the weft insertion process of the rapier head, weft yarns carried by the rapier head enter the first yarn guide hook 2 and the second yarn guide hook 3 from the upper part of the first yarn guide hook cavity 21 and the second yarn guide hook cavity 31 through the left cavity mouth, and then pass through the surface of the yarn pressing claw 52, which is attached to the first yarn guide hook 2 and the second yarn guide hook 3, and the weft yarns pressed by the yarn pressing claw 52 slide through the disc blade 4 rotating at high speed in a tight state, namely are cut off by the disc blade 4. The method specifically comprises the following steps: under the operation of the motor 6 running at high speed, the motor shaft 61 drives the disk blade shaft connecting seat 73, the disk blade shaft connecting seat 73 drives the disk blade shaft 74, the disk blade shaft 74 drives the disk blade 4, and the weft yarn is cut off by the disk blade 4.
In summary, the technical scheme provided by the invention overcomes the defects in the prior art, successfully completes the task of the invention, and faithfully honors the technical effects carried by the applicant in the technical effect column above.
Claims (9)
1. The weft yarn cutting device for the rapier loom comprises a base (1), wherein the base (1) is fixed on the rapier loom in a use state, and a yarn guide hook fixing arm cavity (11) is formed at the rear side of the right end of the base (1); a first yarn guiding hook (2), a second yarn guiding hook (3) and a disc blade (4), the first yarn guiding hook (2) and the second yarn guiding hook (3) are corresponding to each other back and forth, the first yarn guiding hook (2) is provided with a first yarn guiding hook cavity (21), the second yarn guiding hook (3) is provided with a second yarn guiding hook cavity (31), the first yarn guiding hook cavity (21) and the second yarn guiding hook cavity (31) are corresponding to each other back and forth, the left end of the first yarn guiding hook (2) is extended with a first yarn guiding hook fixing arm (22), the left end of the second yarn guiding hook (3) is extended with a second yarn guiding hook fixing arm (32), the first yarn guiding hook fixing arm (22) and the second yarn guiding hook fixing arm (32) are fixed with the base (1) at the position corresponding to the yarn guiding hook fixing arm cavity (11), and the disc blade (4) is positioned between the first yarn guiding hook (2) and the second yarn guiding hook (3); a yarn pressing reed (5), wherein the yarn pressing reed (5) corresponds to the upper part of the base (1) and the left end of the yarn pressing reed (5) is fixed with the base (1), the right end of the yarn pressing reed (5) is formed into a free end and extends out of the right end surface of the base (1) to the disc blade (4), a yarn pressing reed groove (51) is formed at the right end of the yarn pressing reed (5) in a state parallel to the long side direction of the yarn pressing reed (5), and the disc blade (4) corresponds to the yarn pressing reed groove (51); a motor (6) for driving the disc blade (4) to move, characterized by further comprising a disc blade transition connection mechanism (7) for establishing a transmission connection between the disc blade (4) and a motor shaft (61) of the motor (6), the disc blade transition connection mechanism (7) being located between the second guide hook (3) and the motor (6), and the disc blade transition connection mechanism (7) together with the second guide hook fixing arm (32) and the first guide hook fixing arm (22) being fixed to the base (1) at a position corresponding to the guide hook fixing arm cavity (11), the disc blade (4) and the motor (6) establishing the transmission connection on the disc blade transition connection mechanism (7); the disc blade transitional connecting mechanism (7) comprises a motor fixing seat (71), a motor fixing seat fixing arm (72), a disc blade shaft connecting seat (73), a disc blade shaft (74), a radial stress bearing (75) and a separation disc (76), a bearing cavity (711) is formed at the central position of the front end of the motor fixing seat (71), a disc blade shaft connecting seat cavity (712) is formed at the central position of the rear end of the motor fixing seat (71), the bearing cavity (711) and the disc blade shaft connecting seat cavity (712) are communicated with each other, the motor fixing seat fixing arm (72) is formed by directly extending the left side of the motor fixing seat (71) and is perpendicular to the motor fixing seat (71), the motor fixing seat fixing arm (72) corresponds to the rear side of the second yarn guide hook fixing arm (32) and the motor fixing seat fixing arm (72) together with the second yarn guide hook fixing arm (32) and the first yarn guide hook fixing arm (22) are positioned at the position corresponding to the right side surface of the yarn guide hook fixing arm cavity (11) of the base (1) and are connected with the disc blade shaft (73) at the central position of the disc blade shaft (73) which is positioned in the disc shaft connecting seat (73), and the front end of the disc blade shaft (74) extends to a position between the first yarn guiding hooks (2) and the second yarn guiding hooks (3) through the second yarn guiding hook cavity (31), a radial stress bearing (75) is arranged on the disc blade shaft (74) and matched with the cavity wall of the bearing cavity (711), a separation disc (76) is sleeved at the front end of the disc blade shaft (74), the disc blade (4) is fixed at the front end of the disc blade shaft (74) at a position corresponding to the front side of the separation disc (76) and is limited by a disc blade limiting nut (741) screwed at the front end of the disc blade shaft (74), the motor (6) is fixed with a motor fixing seat (71) at a position corresponding to the rear of the disc blade shaft connecting seat cavity (712) of the motor fixing seat (71), and the motor shaft (61) is in driving connection with the rear end of the disc blade shaft connecting seat (73).
2. Weft cutting device for a rapier loom according to claim 1, characterized in that a pair of motor fixing base fixing arm fixing pin shaft holes (721) and a motor fixing base fixing arm screw hole (722) are formed in the motor fixing base fixing arm (72), the motor fixing base fixing arm screw hole (722) is located between the pair of motor fixing base fixing arm fixing pin shaft holes (721) and a fixing arm screw (7221) is disposed in the motor fixing base fixing arm screw hole (722), a pair of first guide hook fixing arm fixing pin shaft holes (221) and a first guide hook fixing arm screw hole (222) are formed in the first guide hook fixing arm (22), the first guide hook fixing arm screw hole (222) is located between the pair of first guide hook fixing arm fixing pin shaft holes (221), a pair of second guide hook fixing pin shaft holes (321) and a second guide hook fixing arm screw hole (322) are formed in the second guide hook fixing arm (32), the second guide hook fixing arm (321) is located between the pair of first guide arm fixing pin shaft holes (721) and the pair of guide hook fixing pin shaft holes (221) and the first guide hook fixing pin shaft holes (721) correspondingly, the first guide hook fixing arm screw hole (222) and the second guide hook fixing arm screw hole (322) are corresponding to the motor fixing seat fixing arm screw hole (722), a guide hook fixing arm partition plate (33) is arranged between the corresponding first guide hook fixing arm screw hole and the corresponding second guide hook fixing arm screw hole (22, 32), a pair of guide hook fixing arm partition plate locating pin shaft holes (331) and a guide hook fixing arm partition plate screw hole (332) are formed in the guide hook fixing arm partition plate (33), the guide hook fixing arm partition plate screw hole (332) is positioned between the pair of guide hook fixing arm partition plate locating pin shaft holes (331), the pair of guide hook fixing arm partition plate locating pin shaft holes (331) correspond to the pair of motor fixing seat fixing arm locating pin shaft holes (721), the guide hook fixing arm partition plate screw hole (332) corresponds to the motor fixing seat fixing arm screw hole (722), a pair of guide hook fixing arm locating pin holes (321) are formed in the guide hook fixing arm cavity (11) of the base (1) and the pair of guide hook fixing arm screw holes (321) are formed in the position corresponding to the guide arm fixing arm screw hole (111), the front ends of the pair of yarn guide hook fixing arm positioning pin shafts (3211) are fixed with the pair of first yarn guide hook fixing arm positioning pin shaft holes (221) after penetrating through the pair of yarn guide hook fixing arm partition plate positioning pin shaft holes (331), the rear ends of the pair of yarn guide hook fixing arm positioning pin shafts (3211) are fixed with the pair of motor fixing seat fixing arm positioning pin shaft holes (721), and the fixing arm screw (7221) sequentially penetrates through the second yarn guide hook fixing arm screw hole (322), the yarn guide hook fixing arm partition plate screw hole (332) and the first yarn guide hook fixing arm screw hole (222) to be screwed into the yarn guide hook fixing arm cavity wall screw hole (111).
3. Weft cutting device for a rapier loom according to claim 1, characterized in that a motor fixing seat internal thread (713) is formed at a position on the motor fixing seat (71) and at the rear of the disc blade shaft connecting seat cavity (712), a motor fixing thread head (62) is formed at the front end central position of the motor (6), a motor fixing thread head external thread (621) is formed on the outer wall of the motor fixing thread head (62), and the motor fixing thread head external thread (621) is in threaded connection with the motor fixing seat internal thread (713).
4. Weft yarn cutting device for a rapier loom according to claim 1, characterized in that a motor shaft connecting hole (731) is provided at the center of the rear end of the disk blade shaft connecting seat (73), and the motor shaft (61) of the motor (6) is connected with the disk blade shaft connecting seat (73) in a driving manner at a position corresponding to the motor shaft connecting hole (731).
5. Weft cutting device for a rapier loom according to claim 4, characterized in that the motor shaft connecting hole (731) is a square hole and a buffer bush (7311) is provided in the motor shaft connecting hole (731), the cross-sectional shape of the motor shaft (61) is square, and the buffer bush (7311) is inserted, and the buffer bush (7311) is rubber or nylon.
6. Weft cutting device for a rapier loom according to claim 1, characterized in that a disk blade shaft external thread (742) is formed at the front end of the disk blade shaft (74), the disk blade limiting nut (741) is screwed at the front end of the disk blade shaft (74) at a position corresponding to the disk blade shaft external thread (742), a disk blade center hole (41) is formed at the center position of the disk blade (4), and the disk blade center hole (41) is sleeved at the front end of the disk blade shaft (74) at a position corresponding to the rear side of the disk blade limiting nut (741).
7. Weft cutting device for rapier loom according to claim 1, characterized in that a dust cover (12) is fixed at the right end of the base (1) and at a position corresponding to the disc blade limiting nut (741), the rear end of the dust cover (12) is inserted into the first yarn guiding hook cavity (21) and forms a dust cover cavity (121), and the disc blade limiting nut (741) is positioned in the dust cover cavity (121).
8. Weft cutting device for a rapier loom according to claim 1, characterized in that a thread holding claw (52) is formed at the right end of the thread holding reed (5) and at the positions on both sides of the thread holding reed groove (51).
9. Weft cutting device for a rapier loom according to claim 1, characterized in that the base (1) is fixed above the base fixing plate (14) by a pair of base fixing bolts (13), a pair of buffer washers (16) are arranged between the base (1) and the base fixing plate (14), the pair of buffer washers (16) are respectively sleeved on the pair of base fixing bolts (13), the base fixing plate (14) is provided with a fixing plate screw hole (141), and the fixing plate screw hole (141) is fixed with the rapier loom by the fixing plate screw hole fixing bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811068033.4A CN108866766B (en) | 2018-09-13 | 2018-09-13 | Weft yarn cutting device for rapier loom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811068033.4A CN108866766B (en) | 2018-09-13 | 2018-09-13 | Weft yarn cutting device for rapier loom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108866766A CN108866766A (en) | 2018-11-23 |
| CN108866766B true CN108866766B (en) | 2024-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811068033.4A Active CN108866766B (en) | 2018-09-13 | 2018-09-13 | Weft yarn cutting device for rapier loom |
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| CN (1) | CN108866766B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH646216A5 (en) * | 1981-08-20 | 1984-11-15 | Agency Imp Exp Distr Aied | Device for cutting the weft threads in shuttleless looms |
| JPH0578952A (en) * | 1991-09-18 | 1993-03-30 | Tsudakoma Corp | Fiber-feeding cutter for repia loom |
| US6155309A (en) * | 1999-01-12 | 2000-12-05 | Sulzer Textil Ag | Settable weft clamping and severing apparatus |
| CN207143427U (en) * | 2017-08-10 | 2018-03-27 | 山东新力环保材料有限公司 | A kind of rapier loom filling cutter |
| CN208917424U (en) * | 2018-09-13 | 2019-05-31 | 太平洋纺织机械（常熟）有限公司 | The weft yarn clipping apparatus of rapier loom |
-
2018
- 2018-09-13 CN CN201811068033.4A patent/CN108866766B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH646216A5 (en) * | 1981-08-20 | 1984-11-15 | Agency Imp Exp Distr Aied | Device for cutting the weft threads in shuttleless looms |
| JPH0578952A (en) * | 1991-09-18 | 1993-03-30 | Tsudakoma Corp | Fiber-feeding cutter for repia loom |
| US6155309A (en) * | 1999-01-12 | 2000-12-05 | Sulzer Textil Ag | Settable weft clamping and severing apparatus |
| CN207143427U (en) * | 2017-08-10 | 2018-03-27 | 山东新力环保材料有限公司 | A kind of rapier loom filling cutter |
| CN208917424U (en) * | 2018-09-13 | 2019-05-31 | 太平洋纺织机械（常熟）有限公司 | The weft yarn clipping apparatus of rapier loom |
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| Publication number | Publication date |
|---|---|
| CN108866766A (en) | 2018-11-23 |
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