Full-width inlay warp knitting machine hybrid inlay device suitable for low-strength yarns

Abstract

The application relates to a mixed laying device of a full-width backing warp knitting machine suitable for low-strength yarns, and relates to the field of warp knitting machines. The application is characterized in that a warp knitting machine frame, a warp knitting machine spindle rotatably connected to the warp knitting machine frame, a weft feeding mechanism in transmission connection with the warp knitting machine spindle, a passive yarn feeding and laying device installed on the top of the warp knitting machine frame, and an active yarn feeding and laying device located on one side of the warp knitting machine frame are arranged. In this case, mixed laying is realized, the problems of yarns being easily stressed and deformed during full-width backing of low-strength yarns of the warp knitting machine are solved, the types of the full-width backing yarns of the warp knitting machine are increased, and the mixed laying can realize arbitrary adjustment of the tension of the laid yarns according to process requirements.

Description

Technical Field

[0001] The present application relates to the technical field of warp knitting machinery, and in particular to a hybrid weft-insertion device for a full-width weft-insertion warp knitting machine suitable for low-strength yarns. Background Art

[0002] At present, the weft insertion yarn of the full-width weft insertion warp knitting machine is transported to the weft insertion mechanism by pulling and dragging the yarn, thereby completing the full-width weft insertion process of the warp knitting machine.

[0003] However, the above-mentioned weaving method applies too much pre-tension to the weft yarn and is only suitable for high-strength and high-rigidity yarns. When warp-knitting full-width weft insertion for low-strength yarns or elastic yarns, it is easy to cause yarn deformation and fabric shrinkage, seriously affecting product quality. Summary of the Invention

[0004] The purpose of this application is to provide a hybrid weft placement device for a full-width weft-inserted warp knitting machine suitable for low-strength yarns, so as to solve the problems of yarn being easily subjected to stress and greatly deformed when warping low-strength yarns with full-width weft-inserted yarns in the above-mentioned prior art.

[0005] To achieve the above objectives, the technical solutions adopted in this application are:

[0006] In a first aspect, the present application provides a hybrid weft placement device for a full-width weft insertion warp knitting machine suitable for low-strength yarns, comprising a warp knitting machine frame, a warp knitting machine main shaft rotatably connected to the warp knitting machine frame, a weft delivery mechanism drivingly connected to the warp knitting machine main shaft, a passive yarn delivery and weft placement mechanism installed on the top of the warp knitting machine frame, and an active yarn delivery and weft placement mechanism located on one side of the warp knitting machine frame;

[0007] The active yarn feeding and weft placing mechanism includes a mounting frame arranged in a vertical direction, a driving motor mounted on the mounting frame, a first driving gear transmission-connected to a power output end of the driving motor, a first annular synchronous belt transmission-connected to the first driving gear in a meshing manner, and a plurality of first driven gears meshingly connected to the first annular synchronous belt; the first driven gear is fixedly sleeved on a first end of a rotating shaft, a middle portion of the rotating shaft is rotatably connected to the mounting frame via a bearing, a second end of the rotating shaft is coaxially connected to a yarn drum seat, and a yarn bobbin is connected to the yarn drum seat;

[0008] The passive yarn feeding and weft placing mechanism pulls the yarn to be unwound from the yarn bobbin and transports the yarn to the loop forming area of ​​the warp knitting machine through the weft feeding mechanism.

[0009] In a possible implementation, the passive yarn feeding and weft placing mechanism includes:

[0010] A slideway installed on the top of the warp knitting machine frame;

[0011] A weft placing trolley slidably connected to the slideway; and

[0012] multiple groups of yarn guide holes located at the bottom of the weft placing trolley;

[0013] When the weft placing trolley slides on the slideway, the yarn is pulled through the yarn guide hole to be unwound from the yarn bobbin.

[0014] In a possible implementation, the weft feeding mechanism includes:

[0015] a second driving gear sleeved on the end of the main shaft of the warp knitting machine;

[0016] a second annular synchronous belt meshingly connected to the second driving gear;

[0017] a plurality of sets of second driven gears rotatably mounted on the warp knitting machine frame and meshing with the second annular synchronous belt;

[0018] a weft delivery trolley mounted on the second endless synchronous belt; and

[0019] Multiple groups of weft-laying and yarn-fixing needles located on the weft-delivering trolley;

[0020] Wherein, the yarn pulled by the passive yarn feeding and weft placing mechanism is connected to the weft placing and yarn fixing needle.

[0021] In a possible implementation, the method further includes a control unit electrically connected to the warp knitting machine main shaft, the weft feeding mechanism, the passive yarn feeding and weft placing mechanism, and the active yarn feeding and weft placing mechanism, for controlling the coordinated operation between the various mechanisms.

[0022] In a second aspect, the present application provides a weft laying method for a hybrid weft laying device of a full-width weft insertion warp knitting machine for low-strength yarns, wherein the method is applicable to any of the above-described hybrid weft laying devices of a full-width weft insertion warp knitting machine for low-strength yarns, and the method comprises:

[0023] Setting corresponding process parameters based on the warp knitting machine main machine process requirements and the weft placement process requirements, and generating a control signal for instructing a control unit to send a weft placement action instruction to the warp knitting machine main shaft, the weft delivery mechanism, the passive yarn delivery and weft placement mechanism, and the active yarn delivery and weft placement mechanism;

[0024] In response to the control unit sending a weft placement action instruction to the main shaft of the warp knitting machine, the weft feeding mechanism, the passive yarn feeding and weft placing mechanism, and the active yarn feeding and weft placing mechanism, the driving motor of the active yarn feeding and weft placing mechanism drives the first driving gear to rotate, the first driving gear drives the first annular synchronous belt to start running, the first annular synchronous belt drives the first driven gear to rotate, and the first driven gear drives the yarn bobbin connected to the yarn bobbin seat to rotate, so as to realize active rotary yarn feeding;

[0025] While the yarn bobbin actively rotates to feed the yarn, the weft placement trolley of the passive yarn feeding and weft placement mechanism slides on a slideway to pull the yarn unwound from the yarn bobbin, so that the active yarn feeding and weft placement mechanism and the passive yarn feeding and weft placement mechanism complete mixed yarn feeding and weft placement to the weft feeding mechanism;

[0026] In response to the active yarn feeding and weft placing mechanism and the passive yarn feeding and weft placing mechanism completing the mixed yarn feeding and weft placing to the weft feeding mechanism, the main shaft of the warp knitting machine drives the second driving gear to rotate, the second driving gear drives the second annular synchronous belt to operate, and the second annular synchronous belt drives the weft feeding trolley to move, so as to realize the delivery of the yarn to the loop forming area of ​​the warp knitting machine.

[0027] The beneficial effects of the technical solution provided by this application include at least:

[0028] By arranging a warp knitting machine frame, a main shaft rotatably connected to the frame, a weft delivery mechanism drivingly connected to the main shaft, a passive weft delivery mechanism mounted on top of the frame, and an active weft delivery mechanism located on one side of the frame, a hybrid weft delivery mechanism is achieved, solving the problem of yarn stress and deformation during full-width weft insertion of low-strength yarns in warp knitting. This increases the variety of full-width weft insertion yarns for warp knitting machines, and the hybrid weft delivery mechanism allows for arbitrary adjustment of weft yarn tension according to process requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0030] Figure 1 A schematic structural diagram of a hybrid weft-insertion device for a full-width weft-insertion warp knitting machine suitable for low-strength yarns provided by an exemplary embodiment of the present application is shown;

[0031] Figure 2 A schematic structural diagram of an active yarn feeding and weft placing mechanism of a hybrid weft placing device of a full-width weft insertion warp knitting machine suitable for low-strength yarns provided by an exemplary embodiment of the present application is shown;

[0032] Figure 3A schematic structural diagram of a hybrid weft-insertion device for a full-width weft-insertion warp knitting machine for low-strength yarns provided by an exemplary embodiment of the present application is shown, with the active yarn feeding and weft-insertion mechanism hidden;

[0033] Figure 4 A flow chart of a weft placing method of a hybrid weft placing device of a full-width weft insertion warp knitting machine applicable to low-strength yarns provided by an exemplary embodiment of the present application is shown;

[0034] In the picture:

[0035] 1. Warp knitting machine frame; 2. Warp knitting machine main shaft; 3. Weft feeding mechanism; 4. Passive yarn feeding and weft placing mechanism; 5. Active yarn feeding and weft placing mechanism; 6. Yarn;

[0036] 31. Second driving gear; 32. Second annular synchronous belt; 33. Second driven gear; 34. Weft delivery trolley; 35. Weft placement and yarn fixing needle;

[0037] 41. Slideway; 42. Weft placing trolley; 43. Yarn guide hole;

[0038] 51. Mounting frame; 52. Driving motor; 53. First driving gear; 54. First annular synchronous belt; 55. First driven gear; 56. Rotating shaft; 57. Bearing; 58. Yarn bobbin seat; 59. Yarn bobbin. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] Among them, the same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings of the present application specification, and the words "bottom" and "top", "inside" and "outside" refer to directions toward or away from specific parts, respectively. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application specification, the meaning of "multiple" is two or more.

[0041] First, a brief introduction to the terms involved in the embodiments of this application is given:

[0042] Figure 1A structural schematic diagram of a hybrid weft placement device for a full-width weft insertion warp knitting machine suitable for low-strength yarns provided by an exemplary embodiment of the present application is shown, wherein the device includes a warp knitting machine frame 1, a warp knitting machine main shaft 2 rotatably connected to the warp knitting machine frame 1, a weft feeding mechanism 3 transmission-connected to the warp knitting machine main shaft 2, a passive yarn feeding and weft placement mechanism 4 installed on the top of the warp knitting machine frame 1, and an active yarn feeding and weft placement mechanism 5 located on one side of the warp knitting machine frame 1.

[0043] In the embodiment of the present application, the main shaft 2 of the warp knitting machine is mounted on the warp knitting machine frame 1 , and what is not shown in the figure is that the main shaft 2 of the warp knitting machine is driven to rotate by a servo motor.

[0044] For more details, see Figure 1 and Figure 2 The active yarn feeding and weft placing mechanism 5 includes a mounting frame 51 arranged in a vertical direction, a driving motor 52 installed on the mounting frame 51, a first driving gear 53 that is transmission-connected to the power output end of the driving motor 52, a first annular synchronous belt 54 that is transmission-connected to the first driving gear 53 in a meshing manner, and multiple groups of first driven gears 55 that are meshed with the first annular synchronous belt 54; the first driven gear 55 is fixedly sleeved on the first end of the rotating shaft 56, the middle part of the rotating shaft 56 is rotatably connected to the mounting frame 51 through a bearing 57, the second end of the rotating shaft 56 is coaxially connected to the yarn drum seat 58, and the yarn drum seat 58 is connected to the yarn bobbin 59; wherein, the passive yarn feeding and weft placing mechanism 4 pulls the yarn 6 to unwind from the yarn bobbin 59, and transports it to the loop forming area of ​​the warp knitting machine through the weft feeding mechanism 3.

[0045] In the embodiment of the present application, the drive motor 52 and the first driving gear 53 are respectively located on either side of the mounting frame 51, and the first driven gear 55 and the yarn bobbin 59 are respectively located on either side of the mounting frame 51. The mounting frame 51 has a through hole for the power output end of the drive motor 52 to pass through, and the mounting frame 51 has a matching hole for mounting a bearing 57. Preferably, the power output end of the drive motor 52 is mounted in the through hole via a set of bearings.

[0046] In a preferred embodiment, the first annular synchronous belt 54 also meshes with a secondary gear, and the mounting frame 51 is rotatably mounted with multiple sets of three-stage gears. These sets of three-stage gears mesh with a three-stage annular synchronous belt, and the secondary gears mesh with one of the three-stage gears. The three-stage gears are mounted in the same manner as the first driven gear 55. The three-stage gears are fixedly mounted on the first end of the rotating shaft, the middle portion of which is rotatably connected to the mounting frame 51 via a bearing. The second end of the rotating shaft is coaxially connected to a yarn bobbin holder, which is connected to the yarn bobbin.

[0047] Specifically, see Figure 1 and Figure 3The passive yarn feeding and weft placing mechanism 4 includes a slide 41 installed on the top of the warp knitting machine frame 1, a weft placing trolley 42 slidably connected to the slide 41, and a plurality of yarn guide holes 43 located at the bottom of the weft placing trolley 42; wherein, when the weft placing trolley 42 slides on the slide 41, the yarn 6 is pulled to be unwound from the yarn bobbin 59 through the yarn guide holes 43.

[0048] In the embodiment of the present application, what is not shown in the figure is that the weft placing trolley 42 is driven by a servo motor to rotate the ball screw, and the moving pair on the ball screw drives the weft placing trolley 42 to slide on the slide 41.

[0049] Further, see Figure 1 and Figure 3 The weft delivery mechanism 3 includes a second driving gear 31 sleeved on the end of the warp knitting machine main shaft 2, a second annular synchronous belt 32 that is transmission-connected to the second driving gear 31 in a meshing manner, multiple sets of second driven gears 33 rotatably mounted on the warp knitting machine frame 1 and meshing with the second annular synchronous belt 32, a weft delivery trolley 34 mounted on the second annular synchronous belt 32, and multiple sets of weft placing and fixing needles 35 located on the weft delivery trolley 34; wherein, the yarn 6 pulled by the passive yarn delivery and weft placing mechanism 4 is connected to the weft placing and fixing needles 35.

[0050] In the embodiment of the present application, multiple sets of second driven gears 33 are used to cooperate with the second driving gear 31 to support the second annular synchronous belt 32. The multiple sets of second driven gears 33 are mounted by being fixedly sleeved on the first end of the rotating shaft, and the second end of the rotating shaft is rotatably connected to the matching mating hole defined in the mounting bracket 51 via a bearing.

[0051] It is worth mentioning that the device also includes a control unit electrically connected to the warp knitting machine main shaft 2, the weft feeding mechanism 3, the passive yarn feeding and weft placing mechanism 4 and the active yarn feeding and weft placing mechanism 5, which is used to control the coordinated work between the various mechanisms.

[0052] In one example, during the weaving preparation stage of the warp knitting machine, the host weaving program is set and run. After the upper computer runs, it sends instructions to the servo drives corresponding to the warp knitting machine main shaft 2, weft feeding mechanism 3, passive yarn feeding and weft placing mechanism 4 and active yarn feeding and weft placing mechanism 5 through the control unit, and finally completes the motion control of each mechanism through the servo motor.

[0053] Figure 4 A flow chart of a weft placement method for a hybrid weft placement device of a full-width weft insertion warp knitting machine suitable for low-strength yarns provided by an exemplary embodiment of the present application is shown. The method is applicable to the hybrid weft placement device of the full-width weft insertion warp knitting machine suitable for low-strength yarns as described above. The method includes:

[0054] Step S1: setting corresponding process parameters based on the process requirements of the warp knitting machine main unit and the weft placement process requirements, and generating a control signal, the control signal being used to instruct a control unit to send a weft placement action instruction to the main shaft, weft delivery mechanism, passive yarn delivery and weft placement mechanism, and active yarn delivery and weft placement mechanism of the warp knitting machine;

[0055] Step S2: In response to the control unit sending the weft placement action instruction to the main shaft of the warp knitting machine, the weft feeding mechanism, the passive yarn feeding and weft placement mechanism, and the active yarn feeding and weft placement mechanism, the driving motor of the active yarn feeding and weft placement mechanism drives the first driving gear to rotate, the first driving gear drives the first annular synchronous belt to start running, the first annular synchronous belt drives the first driven gear to rotate, and the first driven gear drives the yarn bobbin connected to the yarn bobbin seat to rotate, thereby realizing active rotary yarn feeding;

[0056] Step S3: while the yarn bobbin actively rotates to feed the yarn, the weft placement trolley of the passive yarn feeding and weft placement mechanism slides on a slideway to pull the yarn unwound from the yarn bobbin, thereby achieving mixed yarn feeding and weft placement by the active and passive yarn feeding and weft placement mechanisms to the weft feeding mechanism;

[0057] Step S4: In response to the active yarn feeding and weft placing mechanism and the passive yarn feeding and weft placing mechanism completing the mixed yarn feeding and weft placing to the weft feeding mechanism, the main shaft of the warp knitting machine drives the second driving gear to rotate, the second driving gear drives the second annular synchronous belt to operate, and the second annular synchronous belt drives the weft feeding trolley to move, so as to realize the delivery of the yarn to the loop forming area of ​​the warp knitting machine.

[0058] In summary, the present application comprises a warp knitting machine frame, a warp knitting machine main shaft rotatably connected to the warp knitting machine frame, a weft feeding mechanism drivingly connected to the warp knitting machine main shaft, a passive weft feeding and weft placing mechanism mounted on the top of the warp knitting machine frame, and an active weft feeding and weft placing mechanism located on one side of the warp knitting machine frame. In this manner, hybrid weft placement is achieved, resolving the issues of yarn susceptibility to stress and significant deformation during full-width weft insertion of low-strength yarns in warp knitting, increasing the variety of full-width weft insertion yarns for warp knitting machines, and enabling arbitrary adjustment of weft placement yarn tension according to process requirements.

[0059] In the embodiments disclosed herein, terms such as "installed," "connected," "connected," and "fixed" should be understood broadly. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; and "connected" may refer to a direct connection or an indirect connection via an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments disclosed herein based on specific circumstances.

[0060] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A hybrid weft-insertion device for a full-width weft-insertion warp knitting machine suitable for low-strength yarns, characterized in that: The invention comprises a warp knitting machine frame, a warp knitting machine main shaft rotatably connected to the warp knitting machine frame, a weft feeding mechanism drivingly connected to the warp knitting machine main shaft, a passive yarn feeding and weft placing mechanism installed on the top of the warp knitting machine frame, and an active yarn feeding and weft placing mechanism located on one side of the warp knitting machine frame; The active yarn feeding and weft placing mechanism includes a mounting frame arranged in a vertical direction, a driving motor mounted on the mounting frame, a first driving gear transmission-connected to a power output end of the driving motor, a first annular synchronous belt transmission-connected to the first driving gear in a meshing manner, and a plurality of first driven gears meshingly connected to the first annular synchronous belt; the first driven gear is fixedly sleeved on a first end of a rotating shaft, a middle portion of the rotating shaft is rotatably connected to the mounting frame via a bearing, a second end of the rotating shaft is coaxially connected to a yarn drum seat, and a yarn bobbin is connected to the yarn drum seat; The passive yarn feeding and weft placing mechanism pulls the yarn to be unwound from the yarn bobbin and delivers it to the loop forming area of ​​the warp knitting machine through the weft feeding mechanism. The passive yarn feeding and weft placing mechanism includes: a slide mounted on the top of the warp knitting machine frame, a weft placing trolley slidably connected to the slide, and a plurality of yarn guide holes located at the bottom of the weft placing trolley. When the weft placing trolley slides on the slide, the yarn is pulled from the yarn bobbin through the yarn guide holes. The weft delivery mechanism includes: a second driving gear sleeved on the end of the warp knitting machine main shaft, a second annular synchronous belt connected to the second driving gear in a meshing manner, multiple groups of second driven gears rotatably mounted on the warp knitting machine frame and meshing with the second annular synchronous belt, a weft delivery trolley mounted on the second annular synchronous belt, and multiple groups of weft placing and fixing needles located on the weft delivery trolley, wherein the yarn pulled by the passive yarn delivery and weft placing mechanism is connected to the weft placing and fixing needles.

2. The hybrid weft-insertion device for a full-width weft-insertion warp knitting machine suitable for low-strength yarns according to claim 1, characterized in that: It also includes a control unit electrically connected to the warp knitting machine main shaft, the weft feeding mechanism, the passive yarn feeding and weft placing mechanism, and the active yarn feeding and weft placing mechanism, for controlling the coordinated work between the various mechanisms.

3. A weft laying method for a hybrid weft laying device of a full-width weft insertion warp knitting machine suitable for low-strength yarns, characterized in that: The method is applicable to the hybrid weft placement device of a full-width weft insertion warp knitting machine applicable to low-strength yarns as claimed in any one of claims 1 to 2, and the method comprises: Setting corresponding process parameters based on the warp knitting machine main machine process requirements and the weft placement process requirements, and generating a control signal for instructing a control unit to send a weft placement action instruction to the warp knitting machine main shaft, the weft delivery mechanism, the passive yarn delivery and weft placement mechanism, and the active yarn delivery and weft placement mechanism; In response to the control unit sending a weft placement action instruction to the main shaft of the warp knitting machine, the weft feeding mechanism, the passive yarn feeding and weft placing mechanism, and the active yarn feeding and weft placing mechanism, the driving motor of the active yarn feeding and weft placing mechanism drives the first driving gear to rotate, the first driving gear drives the first annular synchronous belt to start running, the first annular synchronous belt drives the first driven gear to rotate, and the first driven gear drives the yarn bobbin connected to the yarn bobbin seat to rotate, so as to realize active rotary yarn feeding; While the yarn bobbin actively rotates to feed the yarn, the weft placement trolley of the passive yarn feeding and weft placement mechanism slides on a slideway to pull the yarn unwound from the yarn bobbin, so that the active yarn feeding and weft placement mechanism and the passive yarn feeding and weft placement mechanism complete mixed yarn feeding and weft placement to the weft feeding mechanism; In response to the active yarn feeding and weft placing mechanism and the passive yarn feeding and weft placing mechanism completing the mixed yarn feeding and weft placing to the weft feeding machine After the structure is arranged, the main shaft of the warp knitting machine drives the second driving gear to rotate, the second driving gear drives the second annular synchronous belt to operate, and the second annular synchronous belt drives the weft feeding trolley to move, so as to deliver the yarn to the loop forming area of ​​the warp knitting machine.

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