Warp let-off adjusting device of air jet loom

Abstract

The utility model discloses an air jet loom let-off adjusting device which comprises a machine frame of an air jet loom, a warp shaft rotationally arranged on the machine frame and a warp tensioning adjusting mechanism arranged on the machine frame and located above the warp shaft. The warp tensioning adjusting mechanism comprises a pair of supports fixed to the rack, a tensioning roller with the two ends rotationally connected with the two supports respectively and parallel to the warp shaft, a rotating shaft located between the first tensioning roller and the warp shaft in parallel, and a pair of eccentric supporting shafts fixedly connected with the two ends of the rotating shaft respectively and rotationally connected with the two supports respectively. The diameter of the eccentric supporting shaft is smaller than that of the rotating shaft, the axis of the eccentric supporting shaft and the axis of the rotating shaft are parallel and spaced, the tensioning roller is located over the warp shaft, and the tensioning cylinder is located on one side of the tensioning roller or the warp shaft. The tension adjusting device has the advantages of being easy and convenient to adjust tension and high in adaptability.

Description

Technical Field

[0001] The utility model relates to the technical field of air-jet looms, in particular to a warp let-off regulating device for air-jet looms. Background Art

[0002] Air jet looms are shuttleless looms that use a jet of air to pull the weft yarn through the shed. The operating principle is that air is used as the weft insertion medium, with the compressed air jet generating frictional traction on the weft yarn, pulling it through the shed. The jet of air creates a flow that inserts the weft. The warp let-off mechanism is a component of air jet looms, primarily used to unwind the warp from the warp beam.

[0003] The Chinese utility model patent with authorization announcement number CN 203668610 U discloses a warp let-off mechanism of an air-jet loom, which includes a fixed rear beam, a left tension support, a right tension support, a movable rear beam, a left support, a right support, a left tension frame and a right tension frame. The two ends of the fixed rear beam are respectively supported on the left tension support and the right tension support through a bearing; the left support is pivotally connected to the left tension support through a pin shaft; the right support is pivotally connected to the right tension support through a pin shaft; the left tension frame is fixed on the left support, and the right tension frame is fixed on the right support; the movable rear beam is supported between the left tension frame and the right tension frame.

[0004] Although the warp let-off mechanism of this utility model adjusts the warp tension by adjusting the position of the movable back beam to ensure that the warp is not easily broken, in the actual adjustment process of the movable back beam, not only does it require the inconvenient disassembly and assembly of the movable back beam, but the fixed position of the movable back beam cannot fully adapt to the different warp tension requirements. Utility Model Content

[0005] The utility model aims to provide a warp let-off regulating device for an air jet loom, which has the effects of easy and convenient tension adjustment and strong adaptability.

[0006] The above-mentioned technical objectives of the present utility model are achieved through the following technical solutions: a warp feeding adjustment device of an air jet loom, comprising a frame of the air jet loom, a warp shaft rotatably arranged on the frame, and a warp tensioning adjustment mechanism arranged on the frame and located above the warp shaft, characterized in that the warp tensioning adjustment mechanism comprises a pair of supports fixed on the frame, tensioning rollers at both ends of which are rotatably connected to the two supports and parallel to the warp shaft, a rotating shaft parallel to the tensioning roller and the warp shaft, a pair of eccentric support shafts fixedly connected to both ends of the rotating shaft and rotatably connected to the two supports, an adjustment component for adjusting and locking the rotation of the eccentric support shaft, and a tensioning cylinder rotatably sleeved on the rotating shaft, the diameter of the eccentric support shaft being smaller than the diameter of the rotating shaft, and the axis center line of the eccentric support shaft and the axis center line of the rotating shaft being parallel and spaced apart from each other, the tensioning roller being located directly above the warp shaft, and the tensioning cylinder being located on one side of the tensioning roller or the warp shaft.

[0007] The utility model is further configured as follows: the support includes a seat body and a support plate vertically fixed on the seat body; the seat body is fixed to the frame by screws; the support plate is R-shaped; the tensioning roller is located at the top of the support plate; and the tensioning cylinder is located below the bending portion of the support plate.

[0008] The utility model is further configured as follows: the inner wall of the tensioning cylinder is provided with a plurality of parallel and spaced annular grooves 1, the outer wall of the rotating shaft is provided with a plurality of annular grooves 2 corresponding to the annular grooves 1 respectively, the cross-sections of the annular grooves 1 and 2 are symmetrical circular arc shapes, and a plurality of balls are sandwiched between the two.

[0009] The present invention is further configured as follows: the adjustment assembly includes a worm wheel fixed on an eccentric support shaft, and a worm rotatably arranged on one side of a support plate and meshing with the worm wheel.

[0010] The utility model is further configured as follows: a square groove is opened on one side of the support plate facing away from the other support plate, the worm wheel and the worm are located in the square groove, and the two ends of the worm are rotatably connected to the two side walls of the square groove, and the eccentric support shaft is rotated to penetrate into the square groove and connect to the worm wheel.

[0011] The utility model is further configured as follows: one end of the worm rotates from the side wall of the square groove to pass through one side of the support plate, and is fixedly connected to a rotating handle.

[0012] The present invention is further configured as follows: a square end cover covering the square groove is screwed to one side of the support plate.

[0013] The present invention is further configured as follows: the length and width of the square end cover are both larger than the square groove, and the support plate is provided with a circle of right-angle grooves surrounding the square groove for connecting with the square end cover.

[0014] The utility model is further configured as follows: a circle of annular protrusions is fixedly provided on one side of the support plate facing away from the other support plate, the annular protrusions are concentric with the eccentric support shaft, the eccentric support shaft rotates through the support plate, and extends into the center of the annular protrusion, one end of which is fixedly connected with an arrow, and the annular protrusion is engraved with a mark for the arrow to indicate the size of the tensioning force.

[0015] The utility model is further configured as follows: a pair of blocking coils 1 are fixedly provided on the outer wall of the tensioning roller, and the two blocking coils 1 are respectively close to the two ends of the winding shaft; a pair of blocking coils 2 are fixedly provided on the outer wall of the tensioning cylinder, and one side of the two blocking coils 2 are respectively flush with the two ends of the tensioning cylinder.

[0016] The beneficial effect of the present utility model is as follows: by adopting the technical solution, when the warp tension needs to be adjusted, the handle is manually turned, so that the handle drives the worm to rotate, and then the worm engages the transmission worm wheel, so that the worm wheel drives the eccentric support shaft to rotate. Since the axis line of the eccentric support shaft and the axis line of the rotating shaft are parallel and spaced from each other, during the rotation of the eccentric support shaft, the axis line of the rotating shaft will not only rotate around the eccentric support shaft, but the rotating shaft itself and the tensioning cylinder will also be displaced in the horizontal position and height position relative to the support plate, thereby adjusting the warp tension in this way. The above adjustment process is not only simple and quick, but also the position adjustment of the tensioning cylinder is flexible, which can better adapt to the tension requirements of different warps. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 2 is a schematic diagram of the three-dimensional structure of this embodiment;

[0019] Figure 2 Schematic diagram of the structure of the warp tensioning adjustment mechanism of this embodiment;

[0020] Figure 3 This is a schematic diagram of the connection relationship between the eccentric support shaft, the rotating shaft and the tensioning cylinder of this embodiment;

[0021] Figure 4 yes Figure 1 A magnified view of point A;

[0022] In the figure, 1. frame; 2. warp shaft; 3. warp tensioning adjustment mechanism; 31. support; 311. seat; 312. support plate; 312a. square groove; 312b. right-angle groove; 312c. annular protrusion; 32. tensioning roller; 321. retaining coil one; 33. rotating shaft; 331. annular groove one; 34. eccentric support shaft; 341. arrow; 35. adjustment assembly; 351. worm gear; 352. worm; 352a. rotating handle; 36. tensioning cylinder; 361. annular groove two; 362. retaining coil two; 37. ball; 38. square end cover. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0024] Embodiment: A warp let-off regulating device for an air jet loom, such as Figure 1-4 As shown, the invention comprises a frame 1 of an air jet loom, a warp shaft 2 rotatably arranged on the frame 1, a warp tensioning adjustment mechanism 3 arranged on the frame 1 and located above the warp shaft 2, characterized in that the warp tensioning adjustment mechanism 3 comprises a pair of supports 31 fixed to the frame 1, a tensioning roller 32 whose two ends are respectively rotatably connected to the two supports 31 and parallel to the warp shaft 2, a rotating shaft 33 parallel to the tensioning roller 32 and the warp shaft 2, a pair of eccentric support shafts 34 respectively fixedly connected to the two ends of the rotating shaft 33 and respectively rotatably connected to the two supports 31, an adjusting And lock the adjustment component 35 that rotates the eccentric support shaft 34, and the tensioning cylinder 36 that is rotatably sleeved on the rotating shaft 33. The diameter of the eccentric support shaft 34 is smaller than the diameter of the rotating shaft 33, and the axis line of the eccentric support shaft 34 and the axis line of the rotating shaft 33 are parallel to each other and spaced apart. The tensioning roller 32 is located directly above the warp shaft 2, and the tensioning cylinder 36 is located on one side of the tensioning roller 32 or the warp shaft 2. The adjustment component 35 includes a worm gear 351 fixed on an eccentric support shaft 34, and a worm 352 that is rotatably set on one side of a support plate 312 and engages with the worm gear 351.

[0025] Furthermore, the support 31 includes a base 311 and a support plate 312 vertically fixed to the base 311. The base 311 is fixed to the frame 1 by screws. The support plate 312 is R-shaped. The tensioning roller 32 is located at the top of the support plate 312, and the tensioning cylinder 36 is located below the bent portion of the support plate 312. By adopting the above-mentioned support 31, not only can the tensioning roller 32 and the eccentric support shaft 34 be stably supported for rotation, but also the entire device can be fully space-saving.

[0026] Furthermore, the inner wall of the tensioning cylinder 36 is formed with a plurality of parallel, spaced annular grooves 331, and the outer wall of the rotating shaft 33 is formed with a plurality of second annular grooves 361 corresponding to the first annular grooves 331. The cross-sections of the first annular grooves 331 and the second annular grooves 361 are symmetrical arcs, and a plurality of balls 37 are sandwiched between them. The use of the first annular grooves 331, the second annular grooves 361, and the balls 37 not only restricts the tensioning cylinder 36 from any movement other than rotation on the rotating shaft 33, but also reduces friction between the tensioning cylinder 36 and the rotating shaft 33, thereby ensuring stable rotation of the tensioning cylinder 36.

[0027] Furthermore, a square groove 312a is defined on the side of one support plate 312 facing away from the other support plate 312. The worm gear 351 and worm 352 are located within the square groove 312a, with the two ends of the worm 352 rotatably connected to the two side walls of the square groove 312a. The eccentric support shaft 34 rotatably penetrates the square groove 312a and connects to the worm gear 351. A square end cap 38 covering the square groove 312a is screwed to one side of the support plate 312. The square end cap 38 is larger in length and width than the square groove 312a. The support plate 312 defines a circle of right-angled grooves 312b surrounding the square groove 312a and engaging the square end cap 38. The use of the square groove 312a not only saves installation space for the worm gear 351 and worm 352, but also, in conjunction with the square cover, protects the transmission safety of the worm gear 351 and worm 352.

[0028] Furthermore, one end of the worm 352 rotates from the side wall of the square groove 312a to pass through one side of the support plate 312, and is fixedly connected to a rotating handle 352a, which can facilitate staff to quickly rotate the worm 352.

[0029] Furthermore, a ring-shaped protrusion 312c is fixedly mounted on one side of one support plate 312, facing away from the other support plate 312. The protrusion 312c is concentric with the eccentric support shaft 34. An eccentric support shaft 34 rotates through the support plate 312 and extends into the center of the protrusion 312c. An arrow 341 is fixedly connected to one end of the eccentric support shaft 34. The protrusion 312c is engraved with a marking indicating the tensioning force. The use of the protrusion 312c, marking, and other structures allows staff to quickly monitor the tensioning force adjustment status, thereby preventing excessive or insufficient tension.

[0030] Furthermore, a pair of retaining coils 321 are fixedly mounted on the outer wall of the tensioning roller 32, with the two retaining coils 321 positioned adjacent to the ends of the winding shaft. A pair of retaining coils 362 are fixedly mounted on the outer wall of the tensioning cylinder 36, with one side of the two retaining coils 362 aligned with the ends of the tensioning cylinder 36. The use of retaining coils 321 and 362 effectively prevents the warp threads from becoming entangled in the gap between the tensioning roller 32 and the rotating shaft 33 after they break.

[0031] The working principle of this embodiment is as follows:

[0032] When the warp tension needs to be adjusted, simply manually turn the handle, causing the handle to rotate the worm 352. The worm 352 then engages the transmission worm gear 351, causing the worm gear 351 to rotate the eccentric support shaft 34. Because the axis of the eccentric support shaft 34 and the axis of the rotating shaft 33 are parallel and spaced apart from each other, during the rotation of the eccentric support shaft 34, the axis of the rotating shaft 33 not only rotates around the eccentric support shaft 34, but the rotating shaft 33 itself and the tensioning cylinder 36 also move horizontally and vertically relative to the support plate 312, thereby adjusting the warp tension. This adjustment process is not only simple and quick, but also allows for flexible adjustment of the position of the tensioning cylinder 36, making it more adaptable to the tension requirements of different warp threads.

Claims

1. A warp let-off adjustment device for an air jet loom, comprising a frame (1) of the air jet loom, a warp shaft (2) rotatably arranged on the frame (1), and a warp tensioning adjustment mechanism (3) arranged on the frame (1) and located above the warp shaft (2), characterized in that: The warp tensioning and adjusting mechanism (3) comprises a pair of supports (31) fixed on the frame (1), a tensioning roller (32) whose two ends are respectively rotatably connected to the two supports (31) and are parallel to the warp axis (2), a rotating shaft (33) located parallel between the tensioning roller (32) and the warp axis (2), a pair of eccentric support shafts (34) respectively fixedly connected to the two ends of the rotating shaft (33) and respectively rotatably connected to the two supports (31), an adjusting component (35) for adjusting and locking the rotation of the eccentric support shaft (34), and a tensioning cylinder (36) rotatably sleeved on the rotating shaft (33), wherein the diameter of the eccentric support shaft (34) is smaller than the diameter of the rotating shaft (33), and the axis center line of the eccentric support shaft (34) and the axis center line of the rotating shaft (33) are parallel and spaced from each other, the tensioning roller (32) is located directly above the warp axis (2), and the tensioning cylinder (36) is located on one side of the tensioning roller (32) or the warp axis (2).

2. The warp let-off adjustment device for an air jet loom according to claim 1, characterized in that: The support (31) comprises a base (311) and a support plate (312) vertically fixed to the base (311); the base (311) is fixed to the frame (1) by screws; the support plate (312) is R-shaped; the tensioning roller (32) is located at the top of the support plate (312); and the tensioning cylinder (36) is located below the bent portion of the support plate (312).

3. The warp let-off adjustment device for an air jet loom according to claim 1, characterized in that: The inner wall of the tensioning cylinder (36) is provided with a plurality of parallel and spaced annular grooves (331), and the outer wall of the rotating shaft (33) is provided with a plurality of annular grooves (361) corresponding to the annular grooves (331) respectively. The cross sections of the annular grooves (331) and (361) are in the shape of mutually symmetrical circular arcs, and a plurality of balls (37) are sandwiched between the two.

4. The warp let-off adjustment device for an air jet loom according to claim 2, characterized in that: The adjustment assembly (35) includes a worm wheel (351) fixed on an eccentric support shaft (34), and a worm (352) rotatably arranged on one side of a support plate (312) and meshing with the worm wheel (351).

5. The warp let-off adjustment device for an air jet loom according to claim 4, characterized in that: A square groove (312a) is provided on one side of the support plate (312) facing away from the other support plate (312); the worm wheel (351) and the worm (352) are located in the square groove (312a); and the two ends of the worm (352) are rotatably connected to the two side walls of the square groove (312a); and the eccentric support shaft (34) is rotatably inserted into the square groove (312a) to connect to the worm wheel (351).

6. The warp let-off adjustment device for an air jet loom according to claim 5, characterized in that: One end of the worm (352) rotates through the side wall of the square groove (312a) and passes through one side of the support plate (312), and is fixedly connected to a rotating handle (352a).

7. The warp let-off adjustment device for an air jet loom according to claim 5, characterized in that: A square end cover (38) covering the square groove (312a) is screwed to one side of the support plate (312).

8. The warp let-off adjustment device for an air jet loom according to claim 7, characterized in that: The length and width of the square end cover (38) are both greater than the square groove (312a), and the support plate (312) is provided with a circle of right-angle grooves (312b) connected to the square end cover (38) around the square groove (312a).

9. The warp let-off adjustment device for an air jet loom according to claim 2, characterized in that: A circle of annular protrusions (312c) is fixedly provided on one side of the support plate (312) facing away from the other support plate (312); the annular protrusions (312c) are concentric with the eccentric support shaft (34); the eccentric support shaft (34) rotates through the support plate (312) and extends into the center of the annular protrusion (312c), one end of which is fixedly connected with an arrow (341); and the annular protrusion (312c) is engraved with a mark indicating the size of the tensioning force indicated by the arrow (341).

10. The warp let-off adjustment device for an air jet loom according to claim 1, characterized in that: A pair of retaining coils (321) are fixedly provided on the outer wall of the tensioning roller (32), and the two retaining coils (321) are respectively close to the two ends of the winding shaft; a pair of retaining coils (362) are fixedly provided on the outer wall of the tensioning cylinder (36), and one side of the two retaining coils (362) are respectively flush with the two ends of the tensioning cylinder (36).

Images