Opening device and method of rapier loom

Abstract

The invention discloses an opening device and method of a rapier loom, the device comprises a plurality of opening assemblies arranged at equal intervals, each opening assembly comprises a guide support, an opening heald frame, an adjusting heald frame and a driving mechanism, the opening heald frame is installed on the guide support in a liftable mode, and the adjusting heald frame is installed on the guide support. The adjusting heald frame is installed on the guide support in a lifting mode and located on the side, away from a rapier of the rapier loom, of the open heald frame, and the driving mechanism is connected with the open heald frame and the adjusting heald frame and used for driving the open heald frame and the adjusting heald frame to synchronously move in the opposite directions; and the moving stroke of the driving mechanism is increased along with the increase of the distance between the opening assembly and the rapier of the rapier loom. According to the rapier loom, the opening assemblies which are independently controlled are arranged, and the action strokes of the opening assemblies are gradually increased along with the positions far away from the rapier, so that the consistency of the opening sizes is ensured, the number of the opening assemblies is increased, and the weaving process of the rapier loom is expanded.

Description

Technical Field

[0001] The invention relates to the technical field of textile machinery, and in particular to a shedding device and method for a rapier loom. Background Art

[0002] The rapier loom is a new type of loom that uses a rapier to insert the weft. It has the characteristics of high speed, high automation and high efficiency. It can adapt to weft yarns of different raw materials, different thicknesses and different cross-sectional shapes. It is widely used in industries such as yarn-dyed weaving, towels and quilts, silk weaving, wool weaving and linen weaving.

[0003] When the rapier loom is working, the opening is first formed at the warp yarn by the opening device, and then the rapier is used to pass through the opening to realize the weft insertion. Figure 1 As shown, the size of the opening 7 of the existing opening device gradually decreases as the distance between the opening heald frame 2 and the grey cloth 6 increases. When the number of heald frames reaches a certain value, the size of the opening will not be enough for the rapier to pass through, so the number of heald frames of the opening device is limited, which in turn limits the weaving process of the rapier loom.

[0004] Based on the above technical problems, the present application proposes a shedding device and method for a rapier loom. Summary of the invention

[0005] The object of the present invention is to provide a shedding device and method for a rapier loom to solve the technical problems mentioned in the background technology. The object of the present invention is achieved through the following technical solutions:

[0006] A shedding device for a rapier loom comprises a plurality of shedding components which are arranged equidistantly in a straight line, the shedding components comprising a guide bracket, an shedding heald frame, an adjusting heald frame and a driving mechanism, the shedding heald frame being movably mounted on the guide bracket, a plurality of shedding healds being arranged in the shedding heald frame, and an opening eyelet being arranged on the shedding healds; the adjusting heald frame being movably mounted on the guide bracket, the adjusting heald frame being located on a side of the shedding heald frame away from the rapier of the rapier loom, the adjusting healds being arranged in the adjusting heald frame, the adjusting healds corresponding to the shedding healds one by one, and the adjusting eyelet being arranged on the adjusting healds; the driving mechanism being connected to the shedding heald frame and the adjusting heald frame, the driving mechanism driving the shedding heald frame and the adjusting heald frame to move synchronously in opposite directions; wherein the moving stroke of the driving mechanism increases with the increase of the distance between the shedding component and the rapier of the rapier loom, there is a height difference between the adjusting eyelet and the shedding eyelet, and the height difference increases with the increase of the distance between the shedding component and the rapier of the rapier loom.

[0007] Furthermore, the guide bracket includes two vertical brackets arranged in parallel, and guide rails are vertically installed on opposite sides of the two vertical brackets, and the opening heald frame and the adjustment heald frame are respectively connected to the guide rails through sliders.

[0008] Furthermore, the driving mechanism includes an opening driving member and an adjusting driving member. The opening driving member is connected to the opening heald frame through a transmission assembly and is used to drive the opening heald frame to reciprocate up and down; the adjusting driving member is connected to the adjusting heald frame through a transmission assembly and is used to drive the adjusting heald frame to reciprocate up and down.

[0009] Furthermore, the opening drive component and the adjustment drive component are both motors.

[0010] Furthermore, the transmission assembly includes a driving arm, a connecting rod 1, a rotating arm, a rotating shaft and a connecting rod 2, one end of the driving arm is fixedly connected to the output shaft of the motor, and one end of the connecting rod 1 is rotatably connected to the other end of the driving arm; the rotating arm includes an active rod and a driven rod, one end of the active rod is connected to one end of the driven rod, the connection between the active rod and the driven rod is rotatably connected to the rotating shaft, one end of the active rod away from the rotating shaft is rotatably connected to the other end of the connecting rod 1, one end of the driven rod away from the rotating shaft is rotatably connected to one end of the connecting rod 2, and the other end of the connecting rod 2 is connected to an open heald frame or an adjustable heald frame.

[0011] Furthermore, there are two rotating arms, two rotating shafts, and two connecting rods, and a connecting rod three is connected between the two rotating arms.

[0012] Further, the regulating heald is an elastic fiber.

[0013] An opening method for an opening device of any of the above-mentioned rapier looms comprises the following steps:

[0014] Step S1, adjusting the positions of the opening heald frame and the adjusting heald frame by means of a driving mechanism so that the positions of the opening heald eye and the adjusting heald eye coincide with each other;

[0015] Step S2, passing the warp yarn on the warp cylinder through the adjustment eye and the opening eye in sequence and then winding it on the cloth roller;

[0016] Step S3, adjusting the position of the opening heald frame and the adjustment heald frame by the driving mechanism, so that the position of the adjustment eye is higher than the position of the opening eye, and as the distance between the adjustment eye and the rapier of the rapier loom increases, the height difference between the adjustment eye and the opening eye gradually increases;

[0017] Step S4, tensioning the warp yarns on each shedding component, and controlling each shedding component to perform shedding action through a driving mechanism.

[0018] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages:

[0019] 1. By setting a number of independently controlled shedding components and gradually increasing the movement stroke of the shedding components as they move away from the rapier, the consistency of the opening size is ensured, thereby increasing the number of shedding components and expanding the weaving process of the rapier loom;

[0020] 2. By setting the adjusting heald frames with synchronous opposite movements, the warp tension on each opening component remains unchanged, avoiding the problem of uneven warp tension caused by different movement strokes of different opening components. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0022] Figure 1 It is the principle diagram of the existing opening device;

[0023] Figure 2 This is a schematic diagram of the structure of the opening device in the embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the structure of the opening assembly of an embodiment of the present application;

[0025] Figure 4 This is a schematic diagram of the structure of an open heald frame according to an embodiment of the present application;

[0026] Figure 5 This is a schematic diagram of adjusting the heald frame structure in an embodiment of the present application;

[0027] Figure 6 This is a schematic diagram of the opening position of an embodiment of the present application;

[0028] Figure 7 This is a schematic diagram of the opening state of an embodiment of the present application.

[0029] Markings in the attached drawings: 1. guide bracket; 11. vertical bracket; 12. guide rail; 2. opening heald frame; 21. opening heald; 22. opening eye; 3. adjusting heald frame; 31. adjusting heald; 32. adjusting eye; 4. transmission assembly; 41. driving arm; 42. connecting rod 1; 43. rotating arm; 431. active rod; 432. driven rod; 44. rotating shaft; 45. connecting rod 2; 46. connecting rod 3; 5. driving mechanism; 51. opening driving member; 52. adjusting driving member; 6. grey cloth; 7. opening. DETAILED DESCRIPTION

[0030] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the drawings and specific implementation methods of the specification. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1

[0032] like Figure 2 , Figure 3 The shedding device of a rapier loom shown in the figure comprises a plurality of shedding components, and the plurality of shedding components are arranged in a straight line with equal distances along the direction of the warp yarn. The shedding component comprises a guide bracket 1, an shedding heald frame 2, an adjusting heald frame 3, a transmission component 4 and a driving mechanism 5, wherein the shedding heald frame 2 and the adjusting heald frame 3 are both slidably mounted on the guide bracket 1, and the shedding heald frame 2 is located on a side close to the rapier of the rapier loom, and the driving mechanism 5 is respectively connected to the shedding heald frame 2 and the adjusting heald frame 3 through the transmission component 4, and is used to drive the shedding heald frame 2 and the adjusting heald frame 3 to move synchronously in opposite directions. Among them, the moving stroke of the shedding component increases with the increase of the distance between the shedding component and the rapier of the rapier loom, that is, compared with the left shedding component, the moving stroke of the shedding heald frame 2 and the adjusting heald frame 3 of the right shedding component is larger.

[0033] like Figure 4 , Figure 5 As shown, the guide bracket 1 includes two vertical brackets 11 installed in parallel, and four guide rails 12 are vertically installed on opposite sides of the two vertical brackets 11, and the four guide rails 12 are symmetrically distributed in pairs.

[0034] like Figure 4 As shown, both sides of the open heald frame 2 are connected to the guide rails 12 through sliders, so that the open heald frame 2 can reciprocate up and down along the vertical bracket 11. A plurality of open healds 21 are vertically installed inside the open heald frame 2, and an open eyelet 22 is fixed in the middle of the open healds 21. The positions of the open healds 21 of different open assemblies are staggered.

[0035] like Figure 5 As shown, both sides of the adjustment heald frame 3 are connected to the guide rail 12 through sliders, so that the adjustment heald frame 3 can reciprocate up and down along the vertical bracket 11. A plurality of adjustment healds 31 are vertically installed inside the adjustment heald frame 2. The number and position of the adjustment healds 31 are the same as the number and position of the opening healds 31 on the same opening assembly. An adjustment eyelet 32 ​​is fixed on the adjustment heald 31. There is a height difference between the adjustment eyelet 32 ​​and the opening eyelet 22. The height difference increases with the increase of the distance between the opening assembly and the rapier of the rapier loom. Preferably, the adjustment heald 31 is an elastic fiber, so that the warp yarn can be buffered during the opening process to avoid warp yarn breakage.

[0036] like Figure 4 , Figure 5As shown, the driving mechanism 5 includes an opening driving member 51 and an adjusting driving member 52, and both the opening driving member 51 and the adjusting driving member 52 are servo motors. The opening driving member 51 is connected to the opening heald frame 2 through the transmission assembly 4, and is used to drive the opening heald frame 2 to move back and forth up and down. The adjusting driving member 52 is connected to the adjusting heald frame 3 through the transmission assembly 4, and is used to drive the adjusting heald frame 3 to move back and forth up and down.

[0037] like Figure 4 , Figure 5 As shown, each transmission assembly 4 includes a driving arm 41, a connecting rod 1 42, a rotating arm 43, a rotating shaft 44, a connecting rod 2 45 and a connecting rod 3 46. One end of the driving arm 41 is fixedly connected to the output shaft of the servo motor, and the other end of the driving arm 41 is rotatably connected to one end of the connecting rod 1 42 through a rotating pair. Four rotating shafts 44 are fixed to the upper and lower sides of the guide bracket 1 in pairs, and the rotating shafts 44 run through the entire length direction of the opening device. The rotating arm 43 is an L-shaped structure formed by connecting an active rod 431 and a driven rod 432. The connection between the active rods 431 and the driven rods 432 of the two rotating arms 43 is rotatably connected to the rotating shaft 44 through a rotating pair. One end of the active rod 431 away from the rotating shaft 44 is rotationally connected to the other end of the connecting rod 1 42 through a rotating pair, one end of the driven rod 432 away from the rotating shaft 44 is rotationally connected to one end of the connecting rod 2 45 through a rotating pair, the other end of the connecting rod 2 4 is connected to the open heald frame 2 or the adjusting heald frame 3 through a rotating pair, and both ends of the connecting rod 3 46 are rotationally connected to the ends of the two active rods 431 away from the rotating shaft 44 through a rotating pair respectively.

[0038] like Figure 4 As shown, when the opening driving member 51 rotates clockwise, the driving arm 41 and the connecting rod 1 42 push the rotating arm 43 to turn counterclockwise, the connecting rod 2 45 moves down, and the opening heald frame 2 moves down; when the opening driving member 51 rotates counterclockwise, the driving arm 41 and the connecting rod 1 42 pull the rotating arm 43 to turn clockwise, the connecting rod 2 45 moves up, and the opening heald frame 2 moves up. And the greater the rotation angle of the opening driving member 51, the greater the displacement distance of the opening heald frame 2.

[0039] like Figure 5 As shown, when the adjusting driving member 52 rotates clockwise, the driving arm 41 and the connecting rod 1 42 push the rotating arm 43 to flip clockwise, the connecting rod 2 45 moves down, and the adjusting heald frame 3 moves down; when the adjusting driving member 52 rotates counterclockwise, the driving arm 41 and the connecting rod 1 42 pull the rotating arm 43 to flip counterclockwise, the connecting rod 2 45 moves up, and the adjusting heald frame 3 moves up. And the greater the rotation angle of the adjusting driving member 52, the greater the displacement distance of the adjusting heald frame 3.

[0040] like Figure 6 As shown, as the distance between the opening heald frame 2 and the grey cloth 6 increases, the opening stroke of the opening assembly gradually increases, so that the size of the opening 7 remains consistent and will not affect the insertion of the rapier.

[0041] like Figure 7 As shown, taking the fourth opening component from the left as an example, when the opening heald frame 2 moves up, the heald frame 3 is adjusted to move down synchronously by the same distance, so that the length of the warp yarn on the fourth opening component remains unchanged, thereby avoiding the problem of uneven warp yarn tension caused by different movement strokes of different opening components.

[0042] Example 2

[0043] An opening method for the opening device of the rapier loom comprises the following steps:

[0044] Step S1, adjusting the positions of the opening heald frame and the adjusting heald frame through the driving mechanism so that the positions of the opening heald frame and the adjusting heald frame coincide with each other; adjusting the positions of the opening heald frame and the adjusting heald frame to coincide with each other can facilitate the insertion of warp yarns.

[0045] Step S2, passing the warp yarn on the warp cylinder through the adjustment eye and the opening eye in sequence and then winding it on the cloth roller to complete the interlacing of the warp yarn.

[0046] Step S3, adjusting the position of the opening heald frame and the adjustment heald frame through the driving mechanism, so that the position of the adjustment eye is higher than the position of the opening eye, and as the distance from the opening increases, the height difference between the adjustment eye and the opening eye gradually increases. Since the movement stroke of the opening eye increases with the increase of the distance from the opening, the height difference between the adjustment eye and the opening eye gradually increases to reserve the corresponding warp length for the movement of the opening eye.

[0047] Step S4, tensioning the warp yarns on each shedding component, and controlling each shedding component to perform shedding action through a driving mechanism.

[0048] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages:

[0049] 1. By setting a number of independently controlled shedding components and gradually increasing the movement stroke of the shedding components as they move away from the rapier, the consistency of the opening size is ensured, thereby increasing the number of shedding components and expanding the weaving process of the rapier loom;

[0050] 2. By setting the adjusting heald frames with synchronous opposite movements, the warp tension on each opening component remains unchanged, avoiding the problem of uneven warp tension caused by different movement strokes of different opening components.

[0051] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shedding device for a rapier loom, characterized in that: The invention comprises a plurality of opening components which are arranged in a straight line and are equidistant from each other. The opening components comprise a guide bracket, an opening heald frame, an adjusting heald frame and a driving mechanism. The opening heald frame can be levitationally mounted on the guide bracket. A plurality of opening healds are arranged in the opening heald frame, and opening healds are provided with opening eyelets. The adjusting heald frame can be levitationally mounted on the guide bracket. The adjusting heald frame is located on a side of the opening heald frame away from the rapier of a rapier loom. An adjusting heald is arranged in the adjusting heald frame, and the adjusting heald corresponds to the opening heald one by one, and an adjusting eyelet is arranged on the adjusting heald. The driving mechanism is connected with the opening heald frame and the adjusting heald frame, and the driving mechanism drives the opening heald frame and the adjusting heald frame to move synchronously in opposite directions. The moving stroke of the driving mechanism increases with the increase of the distance between the opening component and the rapier of the rapier loom, and there is a height difference between the adjusting eyelet and the opening eyelet, and the height difference increases with the increase of the distance between the opening component and the rapier of the rapier loom.

2. A shedding device for a rapier loom according to claim 1, characterized in that: The guide bracket comprises two vertical brackets arranged in parallel, and guide rails are vertically installed on opposite sides of the two vertical brackets. The opening heald frame and the adjusting heald frame are respectively connected to the guide rails through sliders.

3. The shedding device of a rapier loom according to claim 1, characterized in that: The driving mechanism includes an opening driving member and an adjusting driving member. The opening driving member is connected to the opening heald frame through a transmission assembly and is used to drive the opening heald frame to reciprocate up and down; the adjusting driving member is connected to the adjusting heald frame through a transmission assembly and is used to drive the adjusting heald frame to reciprocate up and down.

4. A shedding device for a rapier loom according to claim 3, characterized in that: The opening drive member and the adjustment drive member are both motors.

5. The shedding device of a rapier loom according to claim 4, characterized in that: The transmission assembly includes a driving arm, a connecting rod 1, a rotating arm, a rotating shaft and a connecting rod 2, one end of the driving arm is fixedly connected to the output shaft of the motor, and one end of the connecting rod 1 is rotatably connected to the other end of the driving arm; the rotating arm includes an active rod and a driven rod, one end of the active rod is connected to one end of the driven rod, and the connection between the active rod and the driven rod is rotatably connected to the rotating shaft, one end of the active rod away from the rotating shaft is rotatably connected to the other end of the connecting rod 1, one end of the driven rod away from the rotating shaft is rotatably connected to one end of the connecting rod 2, and the other end of the connecting rod 2 is connected to the opening heald frame or the adjusting heald frame.

6. A shedding device for a rapier loom according to claim 5, characterized in that: There are two rotating arms, two rotating shafts, and two connecting rods, and a connecting rod three is connected between the two rotating arms.

7. The shedding device of a rapier loom according to claim 1, characterized in that: The regulating heald is an elastic fiber.

8. An opening method for an opening device of a rapier loom according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step S1, adjusting the positions of the opening heald frame and the adjusting heald frame by means of a driving mechanism so that the positions of the opening heald eye and the adjusting heald eye coincide with each other; Step S2, passing the warp yarn on the warp cylinder through the adjustment eye and the opening eye in sequence and then winding it on the cloth roller; Step S3, adjusting the position of the opening heald frame and the adjustment heald frame by the driving mechanism, so that the position of the adjustment eye is higher than the position of the opening eye, and as the distance between the adjustment eye and the rapier of the rapier loom increases, the height difference between the adjustment eye and the opening eye gradually increases; Step S4, tensioning the warp yarns on each shedding component, and controlling each shedding component to perform shedding action through a driving mechanism.

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