KR20010037753A - Circular loom - Google Patents

Abstract

PURPOSE: Provided is a circular loom capable of shortening weaving time by installing a shuttle and a weft bobbin placed in the shuttle radially toward a main shaft to place in the direction parallel to warp threads and increasing a number of the shuttle as much as a distance between shuttles is extended. Thereby productivity is promoted by increasing weaving time by half or more. CONSTITUTION: This circular loom comprises a main shaft installed in the center of a frame to rotate in the specified direction; a cam upper plate and a cam lower plate; a cam wheel; an upper circular rail and lower circular rail(41) formed apart from the upper part of the cam upper plate; an inner warp thread guide frame and an outer warp thread guide frame equipped on an outer circular surface for guiding many strands of warp threads(71); a plurality of shuttles(60) installed between the upper and lower circular rail and running on the circular rail by a push lever(16) of the main shaft; and each shuttle and weft bobbin(73) displaced radially toward the main shaft.

Description

Circular looms

The present invention relates to a circular loom, and more specifically, to arrange the respective shuttles running between the upper and lower circular rails and the weft bobbin inside the shuttle in a direction parallel to the inclination so that the interval between the shuttles in the upper and lower circular rails increases. And to increase the number of weft yarns by increasing the number of weft yarns by arranging another shuttle into this increased space, and the amount of weft yarns per unit time is increased and the amount of weft yarns per unit time is increased, thereby reducing the weaving time of the sack fabric. .

In general, circular weaving machines have been recognized as one of the most practical weaving machines for making tubular fabrics, which are suitable as weaving machines for making granules or bags for granules such as grain, sugar, fertilizer and synthetic kernels. Is used. Representative circular looms are well known as circular looms described in US Pat. No. 3,871,413 or circular looms that have been manufactured and sold by Fairbairn Lawson Machinery, Ltd, UK.

Conventional circular looms are provided so that even number of shuttles are installed between the upper and lower circular rails and move along them, and the weft yarns from the weft bobbins installed in each shuttle are wound toward the sizing of the center of the circular loom. And the warp and weft yarn which is continuously opened to the top and bottom of each shuttle by the inclined guide frame is woven to form a tubular bag fabric.

Conventional circular loom shuttles and weft bobbins are arranged between the upper and lower circular rails in the circumferential direction orthogonal to the inclination and are provided so that the weft yarns are released in parallel with the inclination. The number is limited. Since each shuttle is arranged in the circumferential direction, in the case of narrow looms, if four shuttles are arranged in most cases, the space between the shuttles becomes narrower, so that the shuttle can no longer be extended.

Therefore, the number of weft yarns is limited to four, so the winding amount of the weft yarns per unit time does not increase, so in order to shorten the weaving time, the opening time of the inclination is shortened by increasing the rotation of the shuttle. However, if the shuttle is quickly rotated, high temperatures are generated in the cams and the cam wheels, the shuttle wheels guiding the shuttles are easily worn, and the wefts and the inclinations are generated, which may cause dragging.

In addition, the number of shuttles arranged in the circumferential direction can be increased by increasing the diameter of the upper and lower circular rails, but this has an unreasonable disadvantage such that the overall device becomes large and occupies a lot of space and the material cost increases.

The present invention was developed in view of the conventional problems, and an object of the present invention is to install radially toward the main shaft so that the shuttle running in the upper and lower circular rails and the weft bobbin installed inside the shuttle are placed in a direction parallel to the inclination. By increasing the interval between the shuttles and increasing the number of shuttles by the increased interval, the number of wefts wound on the slope is increased to increase the amount of winding the weft per unit time to provide a circular loom that can shorten the weaving time.

Another object of the present invention is to increase the number of the weft wound around the slope by increasing the number of each shuttle installed between the upper and lower circular rail, there is no need to increase the diameter of the upper and lower circular rail, the speed of the shuttle It is to provide a circular loom that can shorten the weaving time of the bag fabric without increasing.

1 is a sectional front view of the present invention circular loom

Figure 2 is a cross-sectional plan view of the present invention circular loom

3 is a perspective view of the present invention shuttle

4 is a plan view of the present invention shuttle

5 is a cross-sectional view of the present invention shuttle

6 is a side view of the present invention shuttle

7 is a perspective view of the present invention shuttle and camwheel

8 is a cross-sectional view of the present invention shuttle and cam wheel

9 is an exploded view of the cam groove of the present invention

<Code Description of Main Parts of Drawing>

10: framework

11: spindle

12: main motor

13: reducer

14: drive gear

15: driven gear

16: push lever

17: push roller

18: winding drum

20: camwheel

20a: Cam guide shaft

21: cam top plate

22: cam bottom plate

23: upper cam groove

23a: mountain part

23b: bone area

24: lower cam groove

24a: bone area

24b: mountain part

25: wheel

26: cam pin

27: sleeve

30: inside slope guide frame

31: Outside slope guide frame

32: inclined lifting bar

33: inclined guide pin

34: inclined hole

40: upper circular rail

41: lower round rail

42: rail support rod

43: inclined portion

44: outside slope portion

50: Sizing

51: size adjustment lever

60: shuttle

61: shuttle wheel

62: doorway

63: weft guide roller

64: weft guide lever

65: shuttle roller

66: bobbin shaft

67: spring

68: streamlined wire

70: sack fabric

71: slope

72: weft

73: wesa bobbin

In order to achieve the above object, the present invention is provided with a weft bobbin built radially toward the main shaft so that the shuttle is placed in the direction parallel to the inclination is provided so as to protrude toward the main shaft between the upper, lower circular rail. And the upper and lower round rails are provided to increase the rail width in order to stably support each protruding shuttle. Each shuttle has four shuttle wheels installed at the bottom and four at the top, so that the shuttle does not sag. It is provided to drive the rail.

In addition, since the weft yarns starting to be released from the weft bobbins built in each shuttle are approximately perpendicular to the inclination, the weft guide rollers are provided in the shuttle so that the weft yarns are in parallel with the inclination. And since each shuttle and the weft bobbin are placed in the direction parallel to the inclination and facing the main axis, the distance between these shuttles increases, and other shuttles can be arranged by this extended interval. As the shuttle increases, the number of wefts wound on the slope increases, and the weaving time of the bag fabric is shortened by the number of the increased wefts.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a front sectional view of the present invention circular loom, Figure 2 is a plan sectional view of the present invention circular loom. The circular loom is provided with a main shaft 11 at the upper center of the frame 10 and the main shaft 11 is formed at the center of the cam upper plate 21 and the cam lower plate 22 provided at the upper portion of the frame 10. Is supported by 22a). The cam upper plate 21 and the cam lower plate 22 are spaced apart at regular intervals in the circumferential direction by a plurality of cam guide shafts 20a formed on the outer circumferential surface, and are provided in a state fixed to the upper portion of the frame 10.

The main shaft 11 protrudes upward of the cam upper plate 21 and is provided with the cam wheel 20 fixed to the main shaft 11 between the cam upper plate 21 and the cam lower plate 22. The cam wheel 20 is rotated together while the main shaft 11 is rotated. On the outer circumferential surface, the upper cam groove 23 and the lower cam groove 24 having a constant waveform such as a sine curve are symmetrically moved upward and downward from the center of the cam wheel 20. A pair is provided if possible. In addition, a plurality of cam guides 20a for supporting the upper and lower cams 21 and 22 and a plurality of cam pins for connecting the cam grooves 23 and 24 are provided, and a plurality of inner sides which are lifted and connected with these cam pins. The inclined guide frame 30 and the outer inclined guide frame 31 are provided above the cam upper plate 21.

The upper part of the cam upper plate 21 forms a concentric circle with the main shaft 11 and the cylindrical lower circular rail 41 is fixed, and the upper circular rail 40 is provided on the upper lower circular rail 41. . The upper circular rail 40 is provided in a state fixed to the upper side of the lower circular rail 41 through a plurality of rail support rods 42 and provided so that the inclination 71 passes between these rail support rods 42. In addition, the shuttle 60 for supplying the weft yarns between the upper and lower circular rails 40 and 41 is provided to travel. The shuttle 60 is provided toward the center of the main shaft 11 in a direction perpendicular to the upper and lower circular rails so as to be parallel to the inclination 71, and eight shuttles 60 are disposed radially along the main shaft 11. .

The upper side of the upper circular rail 40 is provided with a size control lever 51 and the size ring 50 for adjusting the diameter of the bag fabric (70). A plurality of size control lever 51 is provided radially on the upper portion of the upper circular rail 40, the size ring 50 is provided at the end of each of the lever 51 in a cylindrical shape. The warp yarn 71 and the weft yarn constituting the bag fabric 70 are woven into the bag fabric 70 under the sizing 50.

The upper end of the main shaft 11 is provided with a push lever 16 for driving each shuttle (60), the number of shuttles, the upper part of the frame 10 is a bag fabric 70 that is woven from the sizing 50 separately A winding drum 18 for guiding toward the winding device is provided. In addition, the main motor 12 is provided inside the frame 10 and the drive gear 14 of the reduction gear 13 connected to the main motor 12 is engaged with the driven gear 15 at the lower end of the main shaft 11. It is provided.

3 is a perspective view of the shuttle according to the present invention, and FIG. 4 is a plan view of the shuttle according to the present invention. The upper circular rail 40 is provided on the upper side of the lower circular rail 41 fixed to the upper part of the frame 10, and each circular rail ( A plurality of rail support rods 42 are formed radially on the outer circumferential surfaces of the 40 and 41 facing each other. These rail support rods 42 are formed by the number of the inclination 71 and serves to guide the inclination 71 toward the size ring 50. In addition, each shuttle 60 is provided with four shuttle wheels 61 on each of four lower portions so as to travel between the circular rails 40 and 41.

Shuttle 60 is formed with an entrance 62 for drawing the weft bobbin (73) wound around the weft yarn 72 in the opposite direction of travel and the push roller 17 of the tip of the push lever 16 on one side of the entrance (62) ) And a shuttle roller 65 in contact with the cloud is provided. When the push lever 16 is rotated together while the main shaft 11 is rotated, the shuttle 60 is connected to the circular rail 40 through the shuttle roller 65 in contact with the push roller 17 at the tip of the push lever 16. It runs between 41.

The shuttle 60 is provided with a weft guide roller 63 toward the center of the entrance and exit 62. The weft guide roller 63 guides the weft yarn 72 to be released in a direction parallel to the warp yarn 71 so that the weft yarn starting to be released from the weft bobbin 73 is unwound in a direction perpendicular to the warp yarn 71. In this way, the weft yarn 72 that is released in a direction perpendicular to the inclination is released parallel to the inclination while passing through the weft guide roller 63. In addition, the tip of the shuttle (60) is provided with a weft guide lever (64) for guiding the weft through the weft guide roller (63) toward the size ring (50), the weft guide roller (63) through the roller support rod (63a) It is connected to one side of the shuttle (60). In addition, a streamlined wire 68 is formed at the entrance 62 of the shuttle 60 to prevent the weft guide roller 63 from interfering with the inclination 71. The streamlined wire 68 prevents the slanted 71 from opening and closing the roller 63 when the shuttle 60 is rotated.

5 is a cross-sectional view of the shuttle according to the present invention, and FIG. 6 is a side view of the shuttle according to the present invention, and a bobbin shaft 66 for installing the weft bobbin 73 on both sides of the doorway 62 of the shuttle 60 is provided. One side of the bobbin shaft 66 is provided so that its length is adjusted by the spring (67). Each of the shuttle wheels 61 formed on the upper and lower sides of the shuttle 60 is provided to cross over the inclination 71 that is in contact with the surfaces of the upper and lower circular rails 40 and 41. On the front surface, a streamlined protrusion 68 is formed so as not to interfere with the inclination 71 that opens up and down and passes between these inclinations 71.

7 is a perspective view of the shuttle and the cam wheel of the present invention, Figure 8 is a cross-sectional view of the shuttle and the cam wheel of the present invention, the upper cam groove 23 and the lower side to be symmetrical to each other on the outer peripheral surface of the cam wheel 20 coupled to the main shaft (11) Cam groove 24 is provided. These cam grooves 23 and 24 form a sinusoidal curve, and have a ridge and a valley portion 23a and 24a which are maximally opened to each other and a valley and a hill portion 23b and 24b which are as close to each other as possible.

These hills, valleys 23a, 24a and bones, hills 23b, 24b are each provided with four, and each shuttle 60 is positioned on the circular rails 40, 41 for each corresponding position. Is placed on. Since the sum of the hills and valleys is eight, there are eight shuttles 60, and the slope of the sizing (50) side from the hills, valleys (23a) and (24a) and the bones and hills (23b) and (24b) (71) is opened to open the weft yarn (72) wound on the sizing and the weft yarn (72) wound on the sizing due to the difference in the length of each inclined elevating bar 32 between the mountain portion and the valley portion by the inclination Closed, weft and warp weave continuously.

The upper cam groove 23 and the lower cam groove 24 are each provided with a cam wheel 25 having a cam pin 26 and each cam pin 26 has an inner sloping guide disposed at the outer circumference of the circular rails 40 and 41. It is connected to the inclined lifting bar 32 of the frame 30 and the outer inclined guide frame 31. And each cam pin 26 is connected to the sleeve 27 is coupled to the outer periphery of the cam guide shaft 20a for supporting the cam upper plate 21 and the cam lower plate 22, the lifting is guided.

A plurality of inclined guide pins 33 are formed in the inner inclined guide frame 30 and the outer inclined guide frame 31, and each of the inclined guide pins 33 has an inclined hole 34 through which the inclined 71 passes. . When the cam wheel 20 is rotated by the rotation of the main shaft 11, the cams along the hills and valleys 23a and 24a and the valleys and hills 23b and 24b of the upper cam groove 23 and the lower cam groove 24 are rotated. The wheel 25 is driven, and in this process, the cam pin 26 is lifted up and down the cam guide shaft 20a along the sleeve 27. When the cam pin 26 is elevated, the inner inclined guide frame 30 and the outer inclined guide frame 31 connected through the inclined elevating bar 32 are elevated in opposite directions. While the inclined guide frame 30, 31 is lifted in the opposite direction, the inclination 71 is continuously opened, and the bag 70 is woven while the shuttle 60 runs between the gaps.

The upper circular rail 40 and the lower circular rail 41 are inclined in the opposite direction from the center to the outer inclined portion 43 and the outside so that the inclination 71 is as wide as possible and the shuttle wheel 61 can run stably. It has a slope 44. The inner inclined portions 43 respectively formed on the upper and lower circular rails 40 and 41 are inclined in the direction toward the main shaft 11 and the outer inclined portions formed on the upper and lower circular rails 40 and 41, respectively. 44 is inclined so as to be collected toward the inner inclined guide frame 30. And each of the shuttle wheels 61 formed in the shuttle 60 is provided to be inclined toward the top and bottom of the shuttle 60 so as to be in contact with each other at a right angle to these inclined portions (43) (44).

In the present invention configured as described above, when the main motor 12 is rotated, the main shaft 11 is rotated in one direction through the reduction gear 13 and the driven and driven gears 14 and 15. While the main shaft 11 is rotated, the cam wheel 20 and the push lever 16 connected to the main shaft 11 are rotated together, and in this process, the inner and outer inclination guides along the cam grooves 23 and 24 of the cam wheel 20. As the frame 30 and 31 are lifted in opposite directions, the inclination 71 is continuously opened. And by each push lever 16 in rotation, the corresponding shuttle 60 is provided to pass between the inclined 71 to be continuously opened while rotating in a clockwise direction along the circular rail (40, 41).

Shuttle 60 of the present invention is provided radially toward the main shaft 11 to face in the direction parallel to the inclination 71 as shown in Figs. And the upper and lower sides of the shuttle 60 is provided with a shuttle wheel 61 that can run the upper circular rail 40 and the lower circular rail 41. These shuttle wheels 61 are preferably provided four at the top and four at the bottom, and these shuttle wheels 61 are in a direction perpendicular to the inclined portions 43 and 44 formed on the circular rails 40 and 41. Inclined upwards and downwards to make rolling contact.

Each shuttle wheel 61 formed in the upper portion of the shuttle 60 has a form spreading upwards, and each shuttle wheel 61 formed in the lower portion has a spreading form downward. As shown in FIG. 8, the shuttle 60 is in contact with each of the inclined portions 43 and 44 formed on the upper circular rail 40 and the lower circular rail 41 while the inclined shuttle wheels 61 are in rolling contact with each other. It does not flow in the direction of the main shaft 11 or vice versa, and is rotated about the main shaft 11 only along a defined track of the circular rails 40, 41.

A plurality of push levers 16 radially formed on the outer circumferential surface of the main shaft 11 are provided so as to be positioned at the rear rear position of each shuttle 60, and the shuttle roller 65 of the shuttle 60 is provided at the front end of these push levers 16. ) Is provided with a push roller 17 in contact with the cloud. Therefore, when the push roller 17 pushes the shuttle roller 65 by the push lever 16 rotated together with the main shaft, the shuttle 60 is rotated in a predetermined direction.

The inclination 71 is released from a plurality of inclined bobbins not shown in FIG. 1 and these are inclined of a plurality of inner and outer inclined guide frames 30 and 31 arranged at the outer circumference of the circular rails 40 and 41. After being fitted into the hole 34, it passes through the circular rails 40 and 41 and is guided toward the sizing ring 50. And the inclination 71 which passed the sizing 50 is guided to the winding apparatus which winds the bag fabric 70 through the winding drum 18. As shown in FIG.

The weft bobbin (73) wound with the weft yarn (72) is installed through the bobbin shaft (66) inside each shuttle (60) traveling between the circular rails (40) (41) and is released from the weft bobbin (73). The weft that comes out is twisted in the direction so as to be inclined with the inclined 71 while passing through the weft guide roller 63, and is directed toward the size 50 by the weft guide lever 63a. The weft yarns 72 released from the shuttles 60 installed on the circular rails 40 and 41 are zigzag-shaped and woven in each warp 71 toward the winding drum 18 via the sizing 50. It is made of fabric.

In order to prevent the outer circumferential surface of the shuttle 60 from being caught by the open incline 71 while the shuttle 60 passes between the open gaps of the inclination 71, a streamlined shape is provided in the front of the driving direction of the shuttle 60 as shown in FIG. 6. The projection 68 is formed. The streamlined projection 68 is smoothly processed so that the slopes can cross the outer circumferential surface of the shuttle 60 while the shuttle 60 passes between the slopes that are spread upward and downward.

9 is a developed view of the cam grooves 23 and 24, and the shuttle 60 is provided for each of the hills and valleys 23a and 24a and the valleys and hills 23b and 24b of the cam grooves 23 and 24. FIG. This is located. In the process of winding the weft 72 to the outer circumferential surface of the inclination 71, the weft 72 is exposed in the hills, valleys 23a, 24a and bones, the hills 23b, 24b, and the hills and valleys. The weft yarns are closed between the weft yarns and the warp yarns weave together. As shown in FIG. 7, the cam wheels 25 installed in the upper cam groove 23 and the lower cam groove 24, respectively, are connected to the sleeve 27 fitted to the cam guide shaft 20a through the cam pin 26.

Therefore, while the cam grooves 23 and 24 are rotated by the rotation of the cam wheel 20, the hills and valleys 23a and 24a and the valleys and hills 23b and 24b pass toward each cam wheel 25. In this process, the cam wheels 25 are elevated along the cam guide shaft 20a through the cam pin 26 and the sleeve 27. While the cam pin 26 is raised and lowered, the inner and outer inclined guide frames 30 and 31 connected through the inclined elevating rod 32 are lifted in opposite directions and formed in the guide frames 30 and 31. The warps 71 fitted into the 34 are opened in succession, and the weft yarns 72 released from each shuttle 60 are woven along the outer circumferential surface of these warps 71.

As described above, according to the present invention, the shuttle running between the upper and lower circular rails is radially installed to face the main shaft, and the weft bobbins built in these shuttles are aligned with the inclination, thereby increasing the diameter of the upper and lower circular rails. You can increase the spacing of each shuttle without having to. In this way, if the shuttle interval is increased, other shuttles can be arranged between the shuttles, which increases the number of weft yarns, which increases the amount of winding of the wefts per unit time, which shortens the weaving time of the bag fabric. By installing a plurality of shuttle wheels on the shuttle to allow the shuttle to run between the circular rails, but by forming a slope on each circular rail so that the shuttle can run without leaving the track, so that the weft yarn is wound on the slope accurately. In addition, the wefts released from the weft bobbin built in the shuttle side by side with the warp yarns are released in a direction perpendicular to the warp yarns so that the weft guide rollers are released in a direction parallel to the warp yarns to allow the weaving of the warp yarns and the warp yarns. As it is possible to increase the number of weft yarns without increasing the diameter of the circular rail, the weaving time of the bag can be increased more than twice, thereby improving productivity.

Claims (5)

The main shaft 11 is installed in the upper center of the frame 10 and rotated in a constant direction, The cam upper plate 21 and the cam lower plate 22, which are installed at a predetermined interval apart from the upper part of the frame 10 and guide the rotation of the main shaft 11, are provided. The cam upper plate 21 and the cam lower plate 22 are provided. The cam wheel 20 is installed between the and the outer circumferential surface and the upper cam groove 23 and the lower cam groove 24 are formed symmetrically with each other, An upper circular rail 40 and a lower circular rail 41 formed in a concentric circle with the main shaft 11 and spaced apart from each other in the main axis direction are respectively provided on the upper part of the cam upper plate, and the upper and lower circular rails 40 ( Between the 41 and the main shaft 11 is provided with a size ring 50 for determining the diameter of the bag fabric 70 and ascend in opposite directions along the upper cam groove 23 and the lower cam groove 24 The inner inclined guide frame 30 and the outer inclined guide frame 31 for guiding the inclined 71 of the strands through the upper and lower circular rails 40 and 41 toward the sizing ring 50 are upper and lower inclined 71. And are respectively provided on the outer circumferences of the lower circular rails 40 and 41, A plurality of shuttles (60) are provided between the upper and lower circular rails (40, 41) to travel on the circular rails (40, 41) by the push lever 16 of the main shaft and each Shuttle 60 has a weft bobbin (73) wound around the weft yarn 72 toward the sizing ring 50, each of the shuttle 60 and weft bobbin (73) is radially disposed toward the main shaft (11) Circular loom, characterized in that provided with parallel to the inclination. The upper and lower circular rails 40 and 41 are provided with a plurality of shuttle wheels 61 in contact with the upper and lower circular rails 40 and 41, respectively. 40 and 41 are each provided with an inner inclined portion 43 inclined toward the size ring 50 and an outer inclined portion 44 inclined toward the inner inclined guide frame 30, respectively. The shuttle wheels 61 are installed at upper and lower portions of the shuttles 60 so as to be in contact with the inclined portions 43 and the outer slopes 44 in a direction perpendicular to each of the shuttles 60. 11) Circular loom, characterized in that not provided to flow in the direction. According to claim 1, wherein each shuttle (60) is formed with an entrance (62) for drawing out the weft bobbin (73) in the opposite direction of travel, the center of the entrance (62), the weft yarns that are released from the weft bobbin (73) Weft guide rollers (63) are provided so that 72 faces in a direction parallel to the inclination (71). At the tip of the shuttle (60), the wefts released from the weft guide rollers (63) are guided toward the size ring (50). Circular loom characterized in that the weft guide lever (63a) is provided to be woven with the inclination (71). According to claim 1, wherein each of the shuttle 60 is a streamlined projection 68 is formed in the running direction so as to pass between the inclination 71 of the up and down side, the main shaft (opposite side) in the opposite direction of the shuttle (60) Circular shuttle loom characterized in that it is provided with a shuttle roller 65 for rolling the shuttle 60 in contact with the push roller 17 formed on each push lever 16 of the 11). According to claim 1, wherein the upper cam groove 23 and the lower cam groove 24 formed in the cam wheel 20 is a mountain, bone portion 23a (24a) and the bone, mountain portion 23b (24b) is continuous It is formed in a sinusoidal shape and is provided such that each shuttle 60 is placed at each of the mountain and bone portions 23a and 24a and the bone and mountain portions 23b and 24b, and the upper and lower cam grooves 23 ( A cam pin which is fitted to the 24 and elevates the inner and outer inclined guide frames 30 and 31 while being elevated in the same line along the hill and valley portions 23a and 24a and the valley and hill portions 23b and 24b. Circular loom, characterized in that provided (26).