Shuttle propeller and circular loom

Abstract

The present application relates to a shuttle propeller and a circular loom, belonging to the field of textile equipment, which includes a propulsion frame, a friction wheel and a propulsion wheel, wherein the friction wheel and the propulsion wheel are both rotatably connected to the propulsion frame, the friction wheel is in a truncated cone shape, the axis of the friction wheel intersects with the rotation center axis of the propulsion disk, the rotation radius of the end face of the friction wheel facing the propulsion disk with the center of the propulsion disk as the center is R, the wheel width of the friction wheel along the radial direction of the propulsion disk is W, the end face radius of the friction wheel facing the propulsion disk is r0, and the end face radius of the friction wheel away from the propulsion disk is r1; wherein, r1 / r0=(W+R) / R. The present application can effectively improve the slippage of the friction wheel, so that only pure rolling motion occurs between the friction wheel and the friction runway, so as to reduce the wear and transmission abnormal noise between the friction wheel and the friction runway, which not only prolongs the service life of the friction wheel and the entire shuttle propeller, but also improves the overall transmission efficiency of the shuttle propeller.

Description

Technical Field

[0001] The present application relates to the technical field of textile equipment, and in particular to a shuttle propeller and a circular loom. Background Art

[0002] The circular loom is a textile equipment that uses PP or HDPE flat yarn as raw material to weave cylindrical woven fabrics. It uses multiple shuttles with shuttle rings to make circular motions in the circular shuttle, weaving multiple weft yarns at the same time to achieve the process of weaving the flat yarns into cloth by interlacing the warp and weft. There are many spindles on the warp rack. According to the width of the woven fabric and the width of the flat yarn, a certain number of warp yarns are selected. Before the warp yarns enter the weaving area of ​​the circular loom, the heald frame crosses the warp yarns. While the warp yarns are lifted, the weft yarns are wound around the cylinder at equal intervals to weave into a cylindrical cloth.

[0003] As a key part for pushing the shuttle to make circular motion, the shuttle propeller generally includes a propulsion frame, a propulsion wheel and a friction wheel. The propulsion wheel is rotatably connected to the propulsion frame through the propulsion wheel shaft, and the friction wheel is rotatably connected to the propulsion frame through the friction wheel shaft. The propulsion wheel shaft is arranged in parallel with the friction wheel shaft. A propulsion disk is provided in the circular loom, and the end of the propulsion wheel shaft away from the propulsion wheel is installed at the edge of the propulsion disk, wherein the propulsion wheel shaft is arranged along the radial direction of the propulsion disk as a whole. A tension spring is also provided on the propulsion frame, and the tension spring acts on the friction wheel so that the friction wheel always abuts against the friction track of the circular loom. When working, the propulsion disk is rotated by the reduction motor, and the friction wheel rolls on the friction track, playing the role of active friction transmission. The propulsion wheel is a driven wheel and abuts against the tail wheel on the shuttle. After the relative rotation of the two, the shuttle can be driven to make circular motion in the circular shuttle track, and the warp can smoothly pass between the propulsion wheel and the tail wheel for subsequent weaving.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: the friction wheel will slip when rolling on the friction track, resulting in serious wear of the friction wheel, abnormal noise when rolling, and the overall transmission efficiency of the shuttle propeller is also low. Summary of the invention

[0005] In order to improve the transmission slip problem between the friction wheel and the friction runway, the present application provides a shuttle propeller and a circular loom.

[0006] In a first aspect, the present application provides a shuttle propeller, which adopts the following technical solution:

[0007] A shuttle propeller, comprising a propulsion frame, a friction wheel and a propulsion wheel, wherein the friction wheel and the propulsion wheel are both rotatably connected to the propulsion frame, the friction wheel is in a truncated cone shape, the axis of the friction wheel intersects with the rotation center axis of the propulsion disk, the rotation radius of the end face of the friction wheel facing the propulsion disk with the center of the propulsion disk as the center is R, the wheel width of the friction wheel along the radial direction of the propulsion disk is W, the end face radius of the friction wheel facing the propulsion disk is r0, and the end face radius of the friction wheel away from the propulsion disk is r1;

[0008] Among them, r1 / r0=(W+R) / R.

[0009] By adopting the above technical solution, in the related technology, when the friction wheel revolves along the center of the propulsion disk, since the friction wheel is cylindrical, the linear velocity of any point on the surface of the cylinder is consistent when it rotates, but the radius of the point on the friction track that contacts its generatrix is ​​different, so the circumference of the circle corresponding to each point is different, the circumference of the contact point close to the center of the circle is short, and the contact point here hinders the rotation of the friction wheel, and the circumference of the contact point far from the center of the circle is long, and the contact point here drives the friction wheel to rotate, that is, at least one of the direction and magnitude of the friction force at each point where the friction wheel generatrix contacts the friction track is inconsistent, resulting in internal friction, reducing the efficiency of the friction transmission and the life of the propeller. In the present application, a truncated cone structure is adopted for the friction wheel, and the radius ratio of the inner edge to the outer edge is adjusted according to the orbital radius of the friction wheel relative to the propulsion disk. The linear velocity of any circular section on the friction wheel is assumed to be V1, and the orbital linear velocity of the tangent point between the circular section and the friction track is assumed to be V2. The directions and sizes of V1 and V2 can be kept consistent, so that only pure rolling motion occurs between the friction wheel and the friction track, and relative sliding is not likely to occur. This effectively improves the slipping phenomenon of the friction wheel in the related technology, thereby reducing the wear and abnormal noise of the friction wheel, increasing its service life, and at the same time improving the overall transmission efficiency of the shuttle propeller.

[0010] Optionally, the friction wheel is coaxially connected to a friction wheel shaft, and the friction wheel is rotatably connected to the propulsion frame via the friction wheel shaft; the propulsion wheel is coaxially connected to a propulsion wheel shaft, and the propulsion wheel is rotatably connected to the propulsion frame via the propulsion wheel shaft;

[0011] A driving gear is disposed at one end of the friction wheel shaft away from the friction wheel, and a driven gear is disposed at one end of the propulsion wheel shaft away from the propulsion wheel, and the driving gear is meshed with the driven gear.

[0012] By adopting the above technical solution, the normal transmission function between the friction wheel and the propulsion wheel can be met.

[0013] Optionally, the projections of the axis of the propulsion wheel and the axis of the friction wheel in the vertical direction toward the propulsion disk have an intersection, and both the driving gear and the driven gear are straight bevel gears or spiral bevel gears.

[0014] If the axis of the propulsion wheel and the axis of the friction wheel have no intersection in the direction toward the propulsion disk, in order to satisfy the requirement that the axis of the friction wheel passes through the center of the propulsion disk, the end of the propulsion wheel shaft facing the propulsion disk can only be tilted toward the shuttle, and the propulsion frame near the shuttle must increase the volume to install the propulsion wheel shaft in the above-mentioned tilted direction, thereby reducing the distance between the propulsion frame and the tail of the shuttle and the shuttle guard ring. When the circular loom is working, the warp threads slide on the shuttle guard ring and pass between the propulsion wheel and the shuttle tail wheel and the shuttle guard ring, which will hinder the transmission of the warp threads between the propulsion frame and the shuttle. By adopting the above technical solution, the structural volume of the propulsion frame can be reasonably designed and laid out, thereby reducing the possibility of hindering the transmission of the warp threads between the propeller and the shuttle and reducing the risk of thread breakage.

[0015] Since there is an angle between the axis of the propulsion wheel and the axis of the friction wheel, both the driving gear and the driven gear can only use bevel gears, and the taper of the matching bevel gears needs to be determined according to the actual transmission conditions. At the same time, the corresponding bevel gear manufacturing mold needs to be designed.

[0016] Optionally, the propulsion frame is detachably connected to a dust cover which is arranged on the outside of the driving gear and the driven gear.

[0017] By adopting the above technical solution, the possibility of dust generated by the flat wire during weaving falling into the meshing part of the driving gear and the driven gear can be reduced, which protects the driving gear and the driven gear, and makes the transmission between the friction wheel and the propulsion wheel less susceptible to influence. At the same time, since the installation positions of the driving gear and the driven gear are located on the same side of the propulsion frame, and the installation positions of the friction wheel and the propulsion wheel are located on the same other side of the propulsion frame, compared with installing the above transmission elements on the same side of the propulsion frame, this structural form only needs to directly cover the outside of the two gears to achieve connection with the propulsion frame, and there is no need to consider whether the friction wheel shaft and the propulsion wheel shaft pass through the dust cover to increase the dynamic sealing problem, which further increases the sealing performance of the dust cover and saves the use of sealing elements.

[0018] Optionally, the propulsion frame is rotatably connected to a suspension rod installed on the propulsion disc.

[0019] By adopting the above technical solution, a suspension rod is separately provided to realize the connection with the propulsion disk. Compared with the solution in the related art in which the propulsion wheel axle serves as both a transmission connection with the propulsion wheel and an installation connection with the propulsion disk, the unbalanced force on the propulsion wheel axle itself can be reduced.

[0020] Optionally, there is an intersection between the projections of the axis of the suspension rod and the axis of the friction wheel in the vertical direction toward the propulsion disk.

[0021] By adopting the above technical solution, the design principle of the tilting direction of the suspension rod is the same as that of the propulsion wheel axle, both of which are for optimizing the overall layout and structural design of the propulsion frame and reducing the risk of wire breakage to meet normal working requirements.

[0022] Optionally, the friction wheel, propulsion wheel and suspension rod are arranged in sequence, and when the suspension rod is installed on the propulsion disk, the friction wheel abuts against the friction runway under the gravity of the shuttle propeller.

[0023] By adopting the above technical solution, the entire shuttle propeller is eccentrically set. When the suspension rod is connected to the propulsion disk, the entire shuttle propeller rotates around the suspension rod until the friction wheel abuts against the surface of the friction runway, thereby realizing the normal transmission function of the friction wheel, thereby replacing the setting of the tension spring in the relevant technology and avoiding the problem of unstable friction wheel transmission caused by the failure of the tension spring.

[0024] Optionally, the propulsion frame is penetrated by a first mounting hole for installing the friction wheel axle, a second mounting hole for installing the propulsion wheel axle, and a third mounting hole for installing the suspension rod. The openings of the first mounting hole, the second mounting hole, and the third mounting hole are all provided with mounting steps, and bearings are installed in the mounting steps. The friction wheel axle, the propulsion wheel axle, and the suspension rod are rotatably connected to the propulsion frame through the bearings.

[0025] In a second aspect, the present application provides a circular loom, which adopts the following technical solution:

[0026] A circular loom comprises a frame, on which a propulsion disc, a shuttle, a friction track and a circular shuttle track are arranged, and also comprises the above-mentioned shuttle propeller, wherein the shuttle propeller is installed on the propulsion disc.

[0027] Optionally, the vertical distance between the center of the propulsion wheel and the friction track is greater than the vertical distance between the center of the friction wheel and the friction track, and at the same time is less than the vertical distance between the center of the tail wheel on the shuttle and the friction track.

[0028] By adopting the above technical solution, when the propulsion wheel contacts and pushes the tail wheel, the propulsion wheel will be subjected to the reverse force of the tail wheel, and the reverse force has components in the horizontal and vertical directions. Since the shuttle propeller is eccentrically arranged as a whole, the friction wheel has a tendency to move toward the friction track. When the propulsion disc moves faster / slower, the friction wheel is subjected to a greater / smaller component in the vertical direction, and the friction between it and the friction track is greater / smaller, playing the role of adaptive adjustment, replacing the friction adjustment effect of the tension spring on the friction wheel and the friction track in the related technology, thereby providing a more reliable transmission condition for the shuttle running speed, and further reducing the possibility of slipping between the friction wheel and the friction track.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. The special structural design of the friction wheel allows it to only roll with the friction track without sliding relative to the track, which reduces the wear and noise of the friction wheel, increases the service life of the friction wheel itself, and also improves the overall transmission efficiency of the shuttle propeller;

[0031] 2. Through the structural layout design of the friction wheel, propulsion wheel and suspension rod, it not only replaces the setting of the tension spring in the relevant technology and solves the problem of unstable transmission caused by the failure of the tension spring, but also can realize the adjustable friction between the friction wheel and the friction runway, providing transmission possibility for adapting to the high and low speed operation of the shuttle. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the circular loom used to reflect the embodiment of the present application.

[0033] Figure 2 It is a schematic diagram of the structure of the shuttle propeller used in the embodiment of the present application.

[0034] Figure 3 yes Figure 1 Enlarged view of part A in the middle.

[0035] Figure 4 It is a schematic diagram for illustrating the relative position relationship between the friction wheel, propulsion wheel, tail wheel and friction runway in the embodiment of the present application.

[0036] Figure 5 It is a schematic diagram for illustrating the relative position relationship between the friction wheel and the propulsion disk in the embodiment of the present application.

[0037] Explanation of the reference numerals in the accompanying drawings: 1. propulsion frame; 11. first mounting hole; 12. second mounting hole; 13. third mounting hole; 111. mounting step; 2. friction wheel; 21. friction wheel shaft; 211. driving gear; 3. propulsion wheel; 31. propulsion wheel shaft; 311. driven gear; 4. suspension rod; 5. dust cover; 6. frame; 61. friction runway; 62. circular shuttle track; 63. propulsion disk; 631. connecting plate; 64. shuttle; 641. tail wheel; 642. shuttle guard ring; 7. bearing. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-5 This application is described in further detail.

[0039] The present application embodiment discloses a shuttle propeller and a circular loom, such as Figure 1As shown, the circular loom includes a frame 6, on which are provided a concentric propulsion disc 63, a friction track 61 and an annular shuttle 62, on which is provided a shuttle 64, and a shuttle propeller is installed on the propulsion disc 63 and used to push the shuttle 64 to run in the annular shuttle 62.

[0040] like Figure 2 and 3 As shown, the shuttle propeller includes a propulsion frame 1, a friction wheel 2 and a propulsion wheel 3. The propulsion frame 1 is provided with a first mounting hole 11, a second mounting hole 12 and a third mounting hole 13 in sequence along the thickness direction thereof. The first mounting hole 11, the second mounting hole 12 and the third mounting hole 13 are arranged in the same order as the revolution direction of the propulsion disk 63. The friction wheel shaft 21 is installed in the first mounting hole 11, one end of the friction wheel shaft 21 is coaxially fixed with the friction wheel 2, and the other end is coaxially fixed with a driving gear 211; the propulsion wheel shaft 31 is installed in the second mounting hole 12, one end of the propulsion wheel shaft 31 is coaxially fixed with the propulsion wheel 3, and the other end is coaxially fixed with a driven gear 311, and the driving gear 211 is meshed with the driven gear 311; the third mounting hole 13 is installed with a suspension rod 4, and a plurality of connecting plates 631 are connected to the periphery of the propulsion disk 63 along its circumferential direction by bolts, and the suspension rod 4 is also connected to the connecting plate 631 by bolts to realize the installation of the shuttle propeller and the propulsion disk 63.

[0041] Among them, the driving gear 211 and the driven gear 311 are both located on the side of the propulsion frame 1 facing the propulsion disk 63, and the friction wheel 2 and the propulsion wheel 3 are both located on the side of the propulsion frame 1 away from the propulsion disk 63. The axis of the propulsion wheel 3 and the axis of the friction wheel 2 have an intersection in the vertical projection along the direction toward the propulsion disk 63, the axis of the suspension rod 4 is parallel to the axis of the propulsion wheel shaft 31, and the driving gear 211 and the driven gear 311 can both use straight bevel gears or spiral bevel gears.

[0042] During the implementation process, the axial direction of the propulsion wheel 3 can be determined based on the fact that the propulsion wheel 3 pushes the shuttle 64 to obtain a stable motion state without hindering the passage of the warp, and the axial direction of the friction wheel 2 can be determined based on the intersection of the axis of the friction wheel 2 with the rotation axis of the propulsion disk 63. At the same time, in order to simplify the mechanical transmission structure, the axes of the friction wheel 2 and the propulsion wheel 3 are respectively set in the same plane and intersect, and the angle that meets the above conditions is designed.

[0043] like Figure 2 As shown, the openings of the first mounting hole 11, the second mounting hole 12 and the third mounting hole 13 are all provided with mounting steps 111, and the mounting steps 111 are embedded with bearings 7. The friction wheel shaft 21 is installed in the first mounting hole 11, the propulsion wheel shaft 31 is installed in the second mounting hole 12, and the suspension rod 4 is installed in the third mounting hole 13. The friction wheel shaft 21, the propulsion wheel shaft 31 and the suspension rod 4 are all rotatably connected to the propulsion frame 1 through the bearings 7.

[0044] Since the friction wheel shaft 21, the propulsion wheel shaft 31 and the suspension rod 4 are all supported by two front and rear bearings 7 on the propulsion frame 1, during the implementation process, the support distances of the two corresponding front and rear bearings 7 can be designed according to the forces of the friction wheel 2 and the propulsion wheel 3, and the support distances of the two corresponding front and rear bearings of the suspension rod 4 can be designed according to the forces of the propulsion frame 1, so as to reduce the force imbalance at both ends of the friction wheel shaft 21 and the propulsion wheel shaft 31, and indirectly extend the service life of each bearing 7.

[0045] like Figure 2 As shown, the side of the propulsion frame 1 facing the propulsion disk 63 is detachably connected to a dust cover 5 by screws, and the dust cover 5 is arranged on the outside of the driving gear 211 and the driven gear 311 to reduce the possibility of dust generated by the flat wire during weaving falling into the meshing part of the driving gear 211 and the driven gear 311 and the bearing 7.

[0046] like Figure 2 and 3 As shown, when the suspension rod 4 is not installed on the propulsion disk 63, the center of gravity of the shuttle propeller is located between the first mounting hole 11 and the second mounting hole 12, that is, the part of the shuttle propeller on the side where the friction wheel 2 is provided is heavier, and the entire shuttle propeller is eccentrically arranged. When the suspension rod 4 is installed on the propulsion disk 63, the friction wheel 2 is affected by the eccentricity of the shuttle propeller and abuts against the friction track 61.

[0047] like Figure 4 As shown, the vertical distance between the center of the friction wheel 2 and the friction track 61 is h1, the vertical distance between the center of the propulsion wheel 3 and the friction track 61 is h2, and the vertical distance between the center of the tail wheel 641 on the shuttle 64 and the friction track 61 is h3, and h1<h2<h3. When the propulsion disc 63 rotates, the friction wheel 2 rotates after rubbing against the friction track 61, and the driving gear 211 and the driven gear 311 are engaged to drive the propulsion wheel 3 to push the tail wheel 641. At this time, the propulsion wheel 3 will be subjected to the reverse force of the tail wheel 641, and the reverse force has components in both the horizontal and vertical directions. Since the shuttle propeller is eccentrically arranged as a whole, the friction wheel 2 has a tendency to move toward the friction track 61. The component force in the vertical direction can be used to make the friction wheel 2 further resist the surface of the friction track 61, and the friction between the two will be adjusted according to the speed of the propulsion disc 63, thereby providing reliable transmission conditions for the speed of the propulsion disc 63 and the shuttle 64.

[0048] like Figure 5 As shown in the figure, the friction wheel 2 is in a truncated cone shape, and its axis passes through the center of the propulsion disk 63. The side of the friction wheel 2 facing the propulsion disk 63 is defined as the small end, and the other side is defined as the large end. The radius of the small end of the friction wheel 2 is r0, and the radius of the large end is r1, r 0＜r1, the rotation radius of the small end of the friction wheel 2 with the center of the propulsion disk 63 as the center is R, and the wheel width of the friction wheel 2 along the radial direction of the propulsion disk 63 is W, then r1 / r0=(W+R) / R.

[0049] By changing the shape of the friction wheel 2 and the radius ratio of its large end and small end, only pure rolling motion can occur between the friction wheel 2 and the friction track 61 without relative slipping, thereby improving the transmission efficiency between the friction wheel 2 and the friction track 61. At the same time, it also effectively reduces the wear and abnormal noise of the friction wheel 2 and increases its service life.

[0050] It should be noted that in the embodiment of the present application, only the shape and end face size of the friction wheel 2 on the shuttle propeller are described, and the friction wheel shaft 21 is in a non-horizontal state when in use. The shape of the friction track 61 can be adaptively adjusted according to the shape and end face size of the friction wheel 2, which will not be discussed here. If the friction track 61 structure is not adjusted and is still in a horizontal state, the above-mentioned beneficial effects such as improving the transmission efficiency between the friction wheel 2 and the friction track 61 can also be achieved.

[0051] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A shuttle propeller, comprising a propulsion frame (1), a friction wheel (2) and a propulsion wheel (3), wherein the friction wheel (2) and the propulsion wheel (3) are both rotatably connected to the propulsion frame (1), characterized in that: The friction wheel (2) is in a truncated cone shape, the axis of the friction wheel (2) intersects with the rotation center axis of the propulsion disk (63), the rotation radius of the end of the friction wheel (2) facing the propulsion disk (63) with the center of the propulsion disk (63) as the center is R, the wheel width of the friction wheel (2) along the radial direction of the propulsion disk (63) is W, the end surface radius of the friction wheel (2) facing the propulsion disk (63) is r0, and the end surface radius of the friction wheel (2) away from the propulsion disk (63) is r1; Among them, r1 / r0=(W+R) / R.

2. A shuttle propeller according to claim 1, characterized in that: The friction wheel (2) is coaxially connected to a friction wheel shaft (21), and the friction wheel (2) is rotatably connected to the propulsion frame (1) via the friction wheel shaft (21); the propulsion wheel (3) is coaxially connected to a propulsion wheel shaft (31), and the propulsion wheel (3) is rotatably connected to the propulsion frame (1) via the propulsion wheel shaft (31); A driving gear (211) is provided at one end of the friction wheel shaft (21) away from the friction wheel (2), and a driven gear (311) is provided at one end of the propulsion wheel shaft (31) away from the propulsion wheel (3), and the driving gear (211) is meshed with the driven gear (311).

3. A shuttle propeller according to claim 2, characterized in that: The axis of the propulsion wheel (3) and the axis of the friction wheel (2) have an intersection in the vertical projection in the direction toward the propulsion disc (63), and the driving gear (211) and the driven gear (311) both use straight bevel gears or spiral bevel gears.

4. A shuttle propeller according to claim 2, characterized in that: The propulsion frame (1) is detachably connected to a dust cover (5) which is arranged on the outside of the driving gear (211) and the driven gear (311).

5. A shuttle propeller according to claim 1, characterized in that: The propulsion frame (1) is rotatably connected to a suspension rod (4) mounted on the propulsion disc (63).

6. A shuttle propeller according to claim 5, characterized in that: There is an intersection point when the axis of the suspension rod (4) and the axis of the friction wheel (2) are projected in the vertical direction toward the propulsion disc (63).

7. A shuttle propeller according to claim 5, characterized in that: The friction wheel (2), the propulsion wheel (3) and the suspension rod (4) are arranged in sequence. When the suspension rod (4) is installed on the propulsion disk (63), the friction wheel (2) abuts against the friction track (61) under the action of the gravity of the shuttle propeller.

8. A shuttle propeller according to claim 5, characterized in that: The propulsion frame (1) is provided with a first mounting hole (11) for mounting a friction wheel shaft (21), a second mounting hole (12) for mounting a propulsion wheel shaft (31), and a third mounting hole (13) for mounting a suspension rod (4). The first mounting hole (11), the second mounting hole (12), and the third mounting hole (13) are provided with mounting steps (111) at their openings. A bearing (7) is installed in each of the mounting steps (111). The friction wheel shaft (21), the propulsion wheel shaft (31), and the suspension rod (4) are rotatably connected to the propulsion frame (1) via the bearing (7).

9. A circular loom, comprising a frame (6), on which a propulsion disc (63), a shuttle (64), a friction track (61) and a circular shed (62) are arranged, characterized in that: It also comprises a shuttle propeller as claimed in any one of claims 1 to 8, wherein the shuttle propeller is mounted on a propulsion disc (63).

10. A circular loom according to claim 9, characterized in that: The vertical distance between the center of the propulsion wheel (3) and the friction track (61) is greater than the vertical distance between the center of the friction wheel (2) and the friction track (61), and at the same time is less than the vertical distance between the center of the tail wheel (641) on the shuttle (64) and the friction track (61).

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