JP2002227060A - Loom having circulating magnetic shuttle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an improved loom equipped with two circulating magnetic shuttles, having a simple structure in which easy maintenance can be made and repair can be carried out, smoothly operable and thereby increasing the weaving efficiency. SOLUTION: This loom comprises at least one transmitting part 51 comprising a driving wheel 511, a driven wheel 512, an endless driving belt 513 stretched around the driving wheel 511 and the driven wheel 512 and at least one magnetic unit 514 fixed to the inner surface of the driving belt 513, attracting the shuttles 52 and driving the shuttles 52 so as to circulate on the inside of the driving belt 513 on a machine frame body 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loom, and more particularly to a loom provided with a circulating magnetic shuttle circulating along an endless loop.

[0002]

2. Description of the Related Art In a conventional loom, a shuttle shuttle reciprocates along a straight raceway rail.

[0003]

In the picking operation, the traveling speed of the shuttle shuttle is accelerated from 0 to a constant high speed, then braked and reduced to 0. continue,
The same picking operation is repeated in the opposite direction, thereby greatly increasing the time to pick the weft.

[0004] In order to solve the above time-consuming problem, applicant proposes an improved loom provided with a circulating magnetic shuttle. FIG. 1 shows an improved loom 1 including a drive wheel 111 for driving a drive belt 113 to circulate.
Is shown. A series of magnets 114 that draw the magnetic shuttle 13 and drive it to circulate along an endless loop are fixed to the belt 113. The shuttle 13 is picked up by the weft swinging bar with the help of the weft swinging bar, and moves the weft over the reed assembly 20 held by the swinging arm 221 fixed to the rotating shaft 22. When the rotation shaft 22 rotates, the reed assembly 2
0 beats the weft 16. Two series of guide rollers 1
2 are arranged around the drive wheel 111 and the driven wheel 112, respectively, and when the shuttle 2 moves along the two curved portions of the track ring rail 101, the shuttle 13 does not separate from the track wheel rail 101 due to the centrifugal force generated. I will not be dislodged. Conventional looms have the following disadvantages.

[0005] 1. The structure of the loom 1 is relatively complicated. For example, a relatively long track ring rail 101 acting as a path for the shuttle 13 needs to be arranged around the drive belt 113. Further, a number of guide rollers 12 that guide the shuttle 13 to move along a curved path and prevent the shuttle 13 from coming off the endless loop are arranged around the drive wheel 111 and the driven wheel 112.
As a result, it is difficult to manufacture the loom 1, thereby increasing manufacturing costs.

[0006] 2. The shuttle 13 is used for the bearing ring rail 10.
1 cannot move smoothly. Ideally, the portion of the belt 113 between the driving wheel 111 and the driven wheel 112 is at a horizontal position. However, the driving wheel 111 and the driven wheel 1
During operation of the magnet 114 between the twelve, the portion of the belt 113 to which the magnet 114 is connected is slightly lower than the rest of the belt 113 due to the weight of the magnet 114 between the driving wheel 111 and the driven wheel 112. Drive wheel 111 and driven wheel 112
The greater the distance between, the more severely the magnet 114 deviates from a given circuit. When weaving a wider fabric, it is inevitable to increase the distance between the driving wheel 111 and the driven wheel 112. As a result, the belt 113 and the magnet 114 cannot circulate smoothly at high speed. Further, since the shuttle 13 moves on the raceway rail 101 and frequently contacts the guide roller 12, the shuttle 13 cannot fly smoothly along the endless loop, and the weaving efficiency is reduced.

[0007] 3. It is difficult to maintain and repair the loom 1. In order to lower the center of gravity of the loom 1 and reduce the vibration of the loom, the bearing ring rail 101 and the guide roller 12 are disposed below the loom 1 together with the swing arm 221 and the rotating shaft 222. Because they are relatively close to each other,
It is difficult to maintain and repair the loom 1.

[0008]

SUMMARY OF THE INVENTION The present invention has a simple structure, provided with a circulating magnetic shuttle, that can be easily maintained and repaired, operates smoothly and thereby increases weaving efficiency. The purpose of the present invention is to provide an improved loom.

In the present invention, the loom includes the transmission. The transmission includes a drive wheel, a driven wheel, an endless drive belt extending around the drive wheel and the driven wheel, and an inner belt inside the belt to draw the shuttle and drive it to circulate within the belt on the machine frame. At least one magnet fixed to the surface.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the invention will become apparent from the following detailed description of an embodiment of the invention with reference to the accompanying drawings, in which: FIG.

FIG. 2 shows a warp supply mechanism 3 for delivering a warp 31, a shed forming mechanism 4 for forming a shed between the warps 31, and a weft picking mechanism 5 for passing a weft through an opening. 1 shows a first embodiment of a weaving machine of the present invention including a weft beating mechanism 6 for beating a weft thread to a sewn portion (fell) in an opening and a fabric collecting mechanism 30.

Referring to FIGS. 2 and 3, the picking mechanism 5 includes a machine frame 50, a circulating transmission unit 51 disposed on the machine frame 50, and two magnetic shuttles 52 driven by the transmission unit 51. including. The transmission unit 51 includes the machine frame 5
0, a driven wheel 512 arranged to rotate on the machine frame 50, a driven wheel 512 arranged to rotate on the machine frame 50,
An endless drive belt 513 that extends around the drive wheel 511 and the driven wheel 512 and is driven by the drive wheel 511 so as to circulate, and the shuttle 52 is attracted by the shuttle 52.
2 magnet units 5 fixed to the inner surface of the drive belt to drive the motor 2 to circulate on the machine frame 50
14 inclusive.

One of the transmission 51 and the shuttle 52
The structure and operation of the two shuttles 52 will be described in the following paragraphs.

The frame 50 includes a fixed upper bearing ring rail 501 and a fixed lower bearing ring rail 502.
Lower surface of upper bearing ring rail 501 and lower bearing ring rail 5
In the upper surface of the upper part 02, a longitudinal guide slot 503 having an open end and two fixed wear-resistant longitudinal plates 504 are formed, and the above-mentioned longitudinal plate 504 is formed by an upper race. The shuttle 52 is disposed between the raceway rail of either the rail 501 or the lower raceway rail 502 and the longitudinal plate so that the shuttle 52 is inserted into the guide slot 503.
Respectively extend on two sides of. The shuttle 52 is
It is drawn to the magnet unit 514 during the movement of the upper race 501 and the lower race 502.

Each of the guide slots 503 of the upper race 501 and the lower race 502 has a shuttle inlet 503 'and a shuttle outlet 503 ". The shuttle 52 passes through the shuttle inlet 503' and the shuttle 52 is inserted into the guide slot 503. And the shuttle 52 leaves the longitudinal guide slot 503 from the shuttle outlet 503 ''.

Referring to FIG. 4, a row of two longitudinal teeth 515 is formed on the inner surface of the drive belt 513,
Meanwhile, the magnet unit 514 is arranged (only one is shown). Each magnet unit 514 includes an elongated corrugated longitudinal plate 516, the longitudinal plate 516 being a magnet receiving space 516 'between the longitudinal plate 516 and the drive belt 513.
And is secured to the drive belt 513 to suitably receive a plurality of magnets 516 ″ therein.

The drive wheel 511 and the driven wheel 512 have the same structure. Referring to FIG. 5, the drive wheel 511 is configured as a spur gear having an outer peripheral portion formed with teeth that engage with the teeth 515 of the drive belt 513. The drive wheel 511 has an edge with an annular groove 517 formed therein. In the annular groove, the shuttle 52 is drawn to the magnet unit 514, and the magnet unit 514 and the shuttle 52 move. The drive wheel 511 is fixed on the rotating shaft 518 by a sleeve.

Referring to FIGS. 2 and 3, the beating mechanism 6
Includes a reed assembly 60 composed of a row of reed wings 61 and a swinging device 62. The reed wings 61 are arranged on the sley 63.
The swinging device 62 is connected to the reed assembly 60 in order to swing the reed assembly 60, and the swing arms 6 that are firmly connected to each other.
21 and a rotation shaft 622. Each reed wing 61 has a horizontal portion that forms a flat shuttle guide surface 601 on the reed wing,
Thereby, the shuttle 52 is guided to the shed. The machine frame 50 includes an elongated wedge-shaped separator 53 and an elongated wedge-shaped splicer 5 arranged to be fixed to the two sides of the reed assembly 60.
5 are provided. The separator 53 is disposed adjacent to the drive wheel 511 and between the drive wheel 511 and the shuttle inlet 503 ′ of the guide slot 503 of the lower raceway rail 502, and has a contact end adjacent to the shuttle guide surface 601 and a shuttle. Flat horizontal surface 531 flush with guide surface 601
And a wedge-shaped end 532. Thereby, the shuttle 5
2 moves from the drive wheel 511 along the drive belt 513 to the wedge-shaped end 532 of the separator 53, whereby the shuttle 5
2 and the magnet unit 514 are separated at the wedge-shaped end 532. Next, the shuttle 52 moves from the wedge-shaped end 532 onto the surface 531 of the separator 53 and the shuttle guide surface 601 on the reed assembly 60. The left pressing roller 56 and the weft wobble bar 57 are mounted near the reed assembly 60 in a known manner. The coupler 55 is mounted between the reed assembly 60 and the driven wheel 512 in a manner similar to that of the separator 53 and has a contact end 550, a flat horizontal surface 551, and a wedge-shaped end 552. The right pressing roller 56 is connected to the left pressing roller 5.
It is arranged on the connector 55 in the same manner as the method 6.
The shuttle 52 moves away from the wedge-shaped end 552 of the coupler 55,
The magnetic unit 514 is drawn again.

FIG. 6 shows a modified transmission including a drive wheel 711, a driven wheel (not shown) having the same structure as the drive wheel 711, and a drive belt 713. Magnet unit 7
14 is a belt 713 in a manner similar to that of the previous embodiment.
And has a structure similar to that of the previous embodiment.
A row of two longitudinal guide holes 715 is
Fourteen sides pass through a belt 713 and are formed. The drive wheel 711 has an outer peripheral portion from which a plurality of fixed short convex portions 716 extending radially and outward so as to engage with the guide holes 715 of the belt 713 are formed.

FIG. 7 includes two spur gears 711 'secured to the rotating shaft 72' by a sleeve and spaced apart from each other, defining a space 717 'therebetween by the two spur gears. With shuttle 52 'and magnetic unit 51
A modified drive wheel 71 'in which 4' moves is shown. Each drive wheel 711 'has an outer periphery with teeth formed to engage the teeth 515' of the drive belt 513 '.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a conventional loom.

FIG. 2 is a side view showing a first embodiment of the loom of the present invention.

FIG. 3 is a front view showing the embodiment of the present invention.

FIG. 4 is a partial perspective view showing the drive belt of the first embodiment.

FIG. 5 is a sectional view showing a driving wheel of the first embodiment.

FIG. 6 is a perspective view showing a connection between a driving belt and driving wheels of a second embodiment of the loom of the present invention.

FIG. 7 is a front view showing a changed drive wheel.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Loom 3 Warp supply mechanism 4 Shed forming mechanism 5 Weft catching mechanism 6 Weft beating mechanism 12 Guide roller 13, 52 Shuttle 14, 114, 514, 516 '', 714 Magnet unit 16 Weft rocking rod 20, 60 Reed set Solid 22, 222, 518, 622 Rotation axis 30 Fabric collection mechanism 31 Warp 50 Machine frame 51 Circulation transmission unit 53 Separator 55 Splicer 61 Reed pit 62 Swinging device 101 Track ring rail 111, 511, 711, 711 'Drive Wheel 112, 512, Driven wheel 113, 513, 513 ′ 713 Drive belt 221 Swing arm 501 Upper raceway rail 502 Lower raceway rail 503 Guide slot 503 ′ Shuttle inlet 503 ″ Shuttle outlet 504 Abrasion-resistant plate 515 tooth 516 longitudinal plate 516 ′ magnet receiving space 517 annular groove 531 water Surface 532 Kusabikatachitan 550 contact end 552 Kusabikatachitan 601 shuttle guide surface 621 pivoting arm 715 guide hole 716 protruding portions

Claims (8)

[Claims] 1. A warp supply mechanism for sending out a warp; a shed forming mechanism for forming a shed between the warps; a picking mechanism for passing a weft through the shed; A picking mechanism including a mechanical frame, a circulating transmission unit disposed on the mechanical frame, and a shuttle driven by the transmission unit. The part extends around the drive wheel rotatably disposed on the machine frame, the driven wheel rotatably disposed on the machine frame, and the drive wheel and the driven wheel. ,
A loom comprising: an endless drive belt driven to circulate by the drive wheels; and at least one magnet unit fixed to the drive belt and pulling the shuttle to drive it to circulate on the machine frame, The drive belt has an outer surface and an inner surface, the magnet unit is fixed to the inner surface of the drive belt, and the shuttle circulates inside the drive belt on the machine frame. A loom that is attracted to the magnet unit when the shuttle moves around the drive wheel and the driven wheel. 2. The loom according to claim 1, wherein the driving wheel and the driven wheel each have an edge formed with an annular groove, and the shuttle and the magnet unit move in the annular groove. 3. The machine frame includes a fixed upper raceway rail having a bottom surface and a fixed lower raceway rail having a top surface, wherein the bottom surface of the upper raceway rail and the lower raceway rail are fixed. The upper surface is formed with longitudinal guide slots each having an open end, and is provided with two fixed longitudinal plates, the two fixed longitudinal plates being provided with the upper raceway. A rail and one of the lower raceway rails, each of which extends on two sides of the guide slot to position the shuttle between the longitudinal plate and the longitudinal plate, whereby the shuttle is 2. The system of claim 1 wherein said shuttle is confined within a guide slot and is attracted to said magnet unit as said shuttle moves within said upper and lower raceways. The placing of the loom. 4. The reed beating mechanism includes a reed assembly composed of a row of reeds, and a swinging device connected to the reed to swing the reed assembly. A flat shuttle guide surface is formed on the surface of the horizontal portion of the reed wing, which guides the weft to the shed, and the machine frame has a horizontal portion on the machine frame. A contact end fixed near the drive wheel and adjacent to the shuttle guide surface;
An elongate wedge-shaped separator having a wedge-shaped end spaced from the shuttle guide surface and adjacent to the drive wheel, the separator including a wedge-shaped end of the separator along the drive belt from the drive wheel along the drive belt. Has a flat horizontal surface flush with the shuttle guide surface to move the shuttle and the magnet unit apart at the wedge-shaped end, the shuttle being separated from the wedge-shaped end by the 2. The loom of claim 1, wherein said loom moves on a surface and said shuttle guide surface on said reed assembly. 5. The magnet unit includes a plurality of magnets and an elongated corrugated longitudinal plate, the elongated corrugated longitudinal plate receiving a magnet between the corrugated plate and the drive belt. 2. The loom of claim 1, wherein the loom is secured to the drive belt so as to define a plurality of spaces therein, whereby the magnets are each suitably received in a space for receiving the magnet. 6. The drive belt is formed with two longitudinal rows of teeth on the inner surface thereof, and between the two rows of teeth, the corrugated longitudinal plate is fixed to the drive belt. The loom according to claim 5, wherein the drive wheel and the driven wheel are each formed as a spur gear having an outer peripheral portion formed with teeth engaged with the teeth of the drive belt. 7. The drive belt has at least one row of longitudinal guide holes formed through the drive belt, the drive wheel and the driven wheel have outer peripheral portions, and the outer periphery The loom according to claim 6, wherein the portion is formed with a plurality of fixed convex portions extending radially and outward from the outer peripheral portion and engaging with the guide holes of the drive belt. 8. The drive wheel includes a rotating shaft and two spaced spur gears fixed by a sleeve on the rotating shaft, thereby defining a space between the two spur gears. The loom according to claim 1, wherein the shuttle and the magnetic unit move in the space.