Let-off mechanism of air-jet flannelette weaving machine

Abstract

The invention discloses an air-jet flannelette weaving machine let-off mechanism, which comprises two symmetrical first wallboards and two symmetrical second wallboards, the upper parts of the two first wallboards are rotatably connected with a first roller, a first winding drum is fixed on the first roller, the lower parts of the two first wallboards are rotatably connected with a second roller, a second winding drum is fixed on the second roller, and the first winding drum is fixed on the second winding drum. Wherein one first wallboard is provided with a first driving mechanism for controlling the first roller to rotate and a second driving mechanism for controlling the second roller to rotate, the two second wallboards are rotationally connected with a third roller, and the third roller is located on one side of the second roller. A first tensioning roller set is arranged on the two first wallboards and located between the first roller and the second roller. According to the invention, the tension of ground warp and pile warp is stable and the proportion is controllable, and uneven pile loop height or broken warp caused by tension fluctuation is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of air-jet looms, in particular to a warp let-off mechanism of an air-jet velvet loom. Background Art

[0002] Air-jet looms are high-speed, shuttleless looms that use compressed air to eject weft yarn. They are widely used in the modern textile industry. Air-jet velvet looms are a special type of air-jet loom, specifically designed for producing velvet (such as velvet, coral fleece, corduroy, and other velvety fabrics). Based on traditional air-jet looms, they incorporate the technological requirements of velvet weaving, achieving efficient, high-quality velvet production through structural improvements and technological optimization.

[0003] The warp feeding mechanism of an air-jet velvet loom is one of its core systems. It is especially important for the differentiated tension control requirements of the ground warp (bottom layer) and the pile warp (loop layer) in velvet weaving, and needs to have the characteristics of high precision and dynamic response. However, the current warp feeding mechanism has the following main problems: (1) The tension of the ground warp and the pile warp is uncontrollable, which can easily lead to uneven pile height or warp breakage due to tension fluctuations; (2) The ground warp requires higher tension to form the basic structure of the fabric. The tension of the pile warp is usually lower than that of the ground warp to facilitate the formation of loops. However, the current ground warp only relies on a set of tension control devices to provide tension. Moreover, if the number of ground warps is large, it is impossible to control the tension of each layer of ground warp. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a warp let-off mechanism for an air-jet velvet loom to solve the problems of uncontrollable tension and difficulty in controlling the tension of each layer of ground warp mentioned in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A warp feeding mechanism of an air-jet velvet loom comprises two symmetrically arranged first wall panels and two symmetrically arranged second wall panels, the upper parts of the two first wall panels are rotatably connected to a first roller, a first winding roller is fixed on the first roller, the lower parts of the two first wall panels are rotatably connected to a second roller, a second winding roller is fixed on the second roller, one of the first wall panels is provided with a first driving mechanism for controlling the rotation of the first roller and a second driving mechanism for controlling the rotation of the second roller, the two second wall panels are rotatably connected to a third roller, the third roller is located on one side of the second roller; a roller is provided on the two first wall panels between the first roller and the second roller A first tensioning roller group is provided, and the first tensioning roller group includes a support plate installed on the opposite sides of the two first wall panels, the support plate extends toward the third roller, the two support plates are located between the first roller and the second roller, and a plurality of first pins are fixedly connected to one end of the support plate away from the third roller, and each first pin is pivotally connected to a first tensioning cylinder, and all first tensioning cylinders are arranged in parallel. The number of first tensioning cylinders on the two support plates is the same and corresponds one to one, and the telescopic ends of the two corresponding first tensioning cylinders on the two support plates are connected to the first bearing seats, and the first tensioning rollers are rotatably connected to the two first bearing seats.

[0007] Preferably, the first driving mechanism includes a first reduction motor installed on the outside of one of the first wall panels, the first reduction motor is connected to a first transmission shaft through a coupling, the first transmission shaft is connected to a first gear, one end of the first roller is connected to a second gear, and the first gear is meshed with the second gear.

[0008] The above technical solution starts the first reduction motor to drive the first transmission shaft to rotate, and through the cooperation of the first gear and the second gear, it can drive the first roller to rotate, thereby driving the first winding drum to rotate.

[0009] Preferably, the second driving mechanism includes a second reduction motor installed on the outside of one of the first wall panels, the second reduction motor is connected to a second transmission shaft through a coupling, the second transmission shaft is connected to a third gear, one end of the second roller is connected to a fourth gear, and the third gear is engaged with the fourth gear.

[0010] The above technical solution starts the second reduction motor to drive the second transmission shaft to rotate, and through the cooperation of the third gear and the fourth gear, it can drive the second roller to rotate, thereby driving the second winding drum to rotate.

[0011] Preferably, a second tensioning roller group is installed on one side of the first roller on the first wall panel, and the second tensioning roller group includes a fourth roller rotatably connected to the two first wall panels, a second bearing seat installed on the upper part of the two first wall panels, a first shaft rod rotatably connected to the two second bearing seats, a first connecting plate is fixedly connected to the opposite ends of the two first shaft rods, and a second tensioning roller is rotatably connected between the two first connecting plates. The second tensioning roller group also includes a second pin shaft connected to the outer side of the first wall panel, a second tensioning cylinder is pivotally connected to the second pin shaft, and the telescopic end of the second tensioning cylinder is movably connected to the first connecting rod, and the first connecting rod is fixedly connected to the first shaft rod on the corresponding side.

[0012] The above technical solution controls the operation of the second tensioning cylinder, which can drive the first connecting rod to swing. The first connecting rod drives the first connecting plate to rotate through the first shaft, thereby driving the second tensioning roller to deflect, so as to adjust the distance between the second tensioning roller and the fourth roller, thereby achieving tensioning of the velvet warp.

[0013] Preferably, the second tensioning roller group also includes a third pin connected to the outside of the first wall panel and located next to the second pin, the third pin is connected to a first tensioning spring, the first tensioning spring is connected to the first connecting rod, and the first tensioning spring is installed with a first tension sensor.

[0014] In the above technical solution, when the first connecting rod swings, the tension of the pile warp is sensed by the first tension sensor, thereby achieving accurate monitoring.

[0015] Preferably, a third tensioning roller group is installed on one side of the second roller on the first wall panel, and the third tensioning roller group includes a third bearing seat installed on the lower part of the two first wall panels, and the two third bearing seats are rotatably connected to the second shaft rods, and the opposite ends of the two second shaft rods are fixedly connected to the second connecting plates, and two third tensioning rollers are rotatably connected between the two second connecting plates. The third tensioning roller group also includes a fourth pin shaft connected to the outer side of the first wall panel, and the fourth pin shaft is movably connected to the third tensioning cylinder, and the telescopic end of the third tensioning cylinder is pivotally connected to the second connecting rod, and the second connecting rod is fixedly connected to the second shaft rod on the corresponding side.

[0016] The above technical solution controls the operation of the third tensioning cylinder, which can drive the second connecting rod to swing. The second connecting rod drives the second connecting plate to rotate through the second shaft, thereby driving the two third tensioning rollers to deflect together to achieve tensioning of the ground warp.

[0017] Preferably, the third tensioning roller group also includes a fifth pin connected to the outside of the first wall panel and located next to the fourth pin, the fifth pin is connected to a second tensioning spring, the second tensioning spring is connected to the second connecting rod, and the second tensioning spring is installed with a second tension sensor.

[0018] In the above technical solution, when the second connecting rod swings, the second tension sensor senses the tension of the ground, thereby achieving accurate monitoring.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) By arranging the first tensioning roller group between the second tensioning roller group and the third tensioning roller group, the first tensioning roller group includes multiple groups of independent first tensioning cylinders, so that the operation of each first tensioning cylinder can be controlled. On the one hand, the tension of each layer of ground warp can be controlled. On the other hand, the combination with the second tensioning roller group increases the tension of the ground warp, making the tension of the ground warp greater than the tension of the pile warp, which is conducive to the formation of pile loops.

[0021] (2) Ensure that the tension of the ground warp and pile warp is stable and the ratio is controllable to avoid uneven pile height or warp breakage due to tension fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 for Figure 1 A magnified view of point A;

[0024] Figure 3 A schematic diagram of another aspect of the present invention;

[0025] Figure 4 for Figure 3 Enlarged view of point B;

[0026] Figure 5 for Figure 3 Enlarged view of point C;

[0027] Figure 6 This is a schematic diagram of conveying ground warp and pile warp according to the present invention;

[0028] Figure 7 for Figure 6 Enlarged view of point D;

[0029] In the figure: 1-first wall panel, 2-second wall panel, 3-first roller, 4-second roller, 5-third roller, 6-first tensioning roller group, 601-support plate, 602-first pin, 603-first tensioning cylinder, 604-first bearing seat, 605-first tensioning roller, 7-first reduction motor, 8-second gear, 9-second reduction motor, 10-fourth gear, 11-second tensioning roller group, 1101-fourth roller, 1102-second bearing seat, 1103-first shaft, 1104-first connecting plate, 1105-second tensioning roller, 1106-second pin, 110 7-second tensioning cylinder, 1108-first connecting rod, 1109-third pin, 1110-first tensioning spring, 1111-first tension sensor, 12-third tensioning roller group, 1201-third bearing seat, 1202-second shaft, 1203-second connecting plate, 1204-third tensioning roller, 1205-fourth pin, 1206-third tensioning cylinder, 1207-second connecting rod, 1208-fifth pin, 1209-second tensioning spring, 1210-second tension sensor, 13-first winding drum, 14-second winding drum, 15-velvet warp, 16-ground warp. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1

[0032] See also Figure 1-7 A warp feeding mechanism of an air-jet velvet loom comprises two symmetrically arranged first wall panels 1 and two symmetrically arranged second wall panels 2. The upper parts of the two first wall panels 1 are rotatably connected to a first roller 3, a first winding drum 13 is fixed on the first roller 3, and velvet warp is wound on the first winding drum 13. The lower parts of the two first wall panels 1 are rotatably connected to a second roller 4, a second winding drum 14 is fixed on the second roller 4, and multiple layers of ground warp are wound on the second winding drum. The first wall panels 1 and the second wall panels 2 are both mounted on the frame of the air-jet velvet loom.

[0033] One of the first wall panels 1 is equipped with a first drive mechanism that controls the rotation of the first roller 3 and a second drive mechanism that controls the rotation of the second roller 4. A third roller 5 is rotatably connected to each of the two second wall panels 2, located to one side of the second roller 4. The first drive mechanism includes a first reduction motor 7 mounted on the outside of one of the first wall panels. A first transmission shaft is connected to the first reduction motor via a coupling, and a first gear is connected to the first transmission shaft. A second gear 8 is connected to one end of the first roller 3, and the first and second gears mesh. The second drive mechanism includes a second reduction motor 9 mounted on the outside of one of the first wall panels. A second transmission shaft is connected to the second transmission shaft via a coupling, and a third gear is connected to the second transmission shaft. A fourth gear 10 is connected to one end of the second roller 4, and the third and fourth gears mesh. The first reduction motor 7 rotates, driving the first transmission shaft to rotate. The first gear and the second gear 8 work together to drive the first roller 3, which in turn drives the first take-up drum 13 to release the pile warp. The second reduction motor 9 rotates, driving the second transmission shaft to rotate. Through the cooperation of the third gear and the fourth gear 10, the second roller 4 rotates, thereby driving the second winding drum 14 to rotate to release the ground warp. After the ground warp passes around the third roller 5, it overlaps with the pile warp.

[0034] A third tensioning roller group 12 is installed on one side of the second roller on the first wall panel 1, and the third tensioning roller group 12 includes a third bearing seat 1201 installed on the lower part of the two first wall panels, and the two third bearing seats 1201 are rotatably connected to the second shaft rod 1202, and the opposite ends of the two second shaft rods 1202 are fixedly connected to the second connecting plates 1203, and two third tensioning rollers 1204 are rotatably connected between the two second connecting plates 1203. The third tensioning roller group 1204 also includes a fourth pin shaft 1205 connected to the outer side of the first wall panel, and the fourth pin shaft 1205 is movably connected to the third tensioning cylinder 1206. The telescopic end of the third tensioning cylinder 1206 is pivotally connected to the second connecting rod 1207, and the second connecting rod 1207 is fixedly connected to the second shaft rod 1202 on the corresponding side. The ground warp is released from the second winding drum 14, passes between the two third tensioning rollers 1204 and is then transported to the third roller 5. By controlling the operation of the third tensioning cylinder 1206, the second connecting rod 1207 can be driven to swing, and the second connecting rod 1207 drives the second connecting plate 1203 to rotate through the second shaft 1202, thereby driving the two third tensioning rollers 1204 to deflect together, thereby realizing the tensioning of the ground warp.

[0035] A first tensioning roller group 6 is provided on the two first wall panels 1 between the first roller and the second roller. The first tensioning roller group 6 includes a support plate 601 installed on the opposite sides of the two first wall panels. The support plate 601 extends toward the third roller 5. The two support plates 601 are located between the first roller 3 and the second roller 4. A plurality of first pins 602 are fixedly connected to the end of the support plate 601 away from the third roller. Each first pin 602 is pivotally connected to a first tensioning cylinder 603. All first tensioning cylinders 603 are arranged in parallel. The number of first tensioning cylinders 603 on the two support plates 601 is the same and corresponds one to one. The telescopic ends of the two corresponding first tensioning cylinders 603 on the two support plates 601 are connected to a first bearing seat 604, and the first tensioning rollers 605 are rotatably connected to the two first bearing seats 604. After the multiple layers of ground warp pass through the third roller 5, each layer of ground warp passes through each first tensioning roller 605, separating the ground warps into multiple groups. By controlling the operation of any first tensioning cylinder 603, the corresponding ground warp can be tensioned, achieving control over the tension of any ground warp layer. Combined with the coordination of the third tensioning roller group, the tension of the ground warp can be increased, making it greater than that of the pile warp, facilitating pile loop formation.

[0036] A second tensioning roller group 11 is installed on one side of the first roller on the first wall panel 1, and the second tensioning roller group 11 includes a fourth roller 1101 rotatably connected to the two first wall panels, and a second bearing seat 1102 installed on the upper part of the two first wall panels. The two second bearing seats 1102 are rotatably connected to the first shaft rod 1103, and the opposite ends of the two first shaft rods 1103 are fixedly connected to the first connecting plate 1104. A second tensioning roller 1105 is rotatably connected between the two first connecting plates 1104. The second tensioning roller group 11 also includes a second pin shaft 1106 connected to the outer side of the first wall panel, and a second tensioning cylinder 1107 is pivotally connected to the second pin shaft 1106. The telescopic end of the second tensioning cylinder 1107 is movably connected to the first connecting rod 1108, and the first connecting rod 1108 is fixedly connected to the first shaft rod 1103 on the corresponding side. The pile warp is released by the first winding drum 13. The second tensioning cylinder 1107 is controlled to operate, causing the first connecting rod 1108 to swing. The first connecting rod 1108, via the first shaft 1103, rotates the first connecting plate 1104, thereby causing the second tensioning roller 1105 to deflect, adjusting the distance between the second tensioning roller 1105 and the fourth roller 1101, thereby tensioning the pile warp. After the pile warp overlaps with the ground warp, it lies above the ground warp and is then fed into the subsequent process.

[0037] Example 2

[0038] Based on Example 1, the second tensioning roller assembly 11 further includes a third pin 1109 connected to the outside of the first wall panel and located next to the second pin. A first tensioning spring 1110 is connected to the third pin 1109. The first tensioning spring 1110 is connected to the first connecting rod 1108. A first tension sensor 1111 is mounted on the first tensioning spring 1110. When the first connecting rod 1108 swings, the first tension sensor 1111 senses the tension of the pile warp, thereby enabling accurate monitoring of the pile warp tension.

[0039] The third tensioning roller assembly 12 also includes a fifth pin 1208 connected to the outside of the first wall panel and located next to the fourth pin. A second tensioning spring 1209 is connected to the fifth pin 1208. The second tensioning spring 1209 is connected to the second connecting rod 1207. A second tension sensor 1210 is mounted on the second tensioning spring 1209. When the second connecting rod 1107 swings, the second tension sensor 1210 senses the tension in the ground warp, enabling precise monitoring of the ground warp tension.

[0040] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A warp let-off mechanism for an air-jet velvet loom, characterized in that: The invention comprises two symmetrically arranged first wall panels (1) and two symmetrically arranged second wall panels (2), wherein the upper parts of the two first wall panels (1) are rotatably connected to a first roller (3), a first winding roller (13) is fixed on the first roller (3), and the lower parts of the two first wall panels (1) are rotatably connected to a second roller (4), a second winding roller (14) is fixed on the second roller (4), one of the first wall panels (1) is provided with a first driving mechanism for controlling the rotation of the first roller (3) and a second driving mechanism for controlling the rotation of the second roller (4), and the two second wall panels (2) are rotatably connected to a third roller (5), and the third roller (5) is located on one side of the second roller (4); A first tensioning roller group (6) is provided on the two first wall panels (1) between the first roller and the second roller. The first tensioning roller group (6) includes a support plate (601) installed on the opposite sides of the two first wall panels. The support plate (601) extends toward the third roller (5). The two support plates (601) are located between the first roller (3) and the second roller (4). A plurality of first pins (602) are fixedly connected to one end of the support plate (601) away from the third roller. Each first pin (602) is pivotally connected to a first tensioning cylinder (603). All first tensioning cylinders (603) are arranged in parallel. The number of first tensioning cylinders (603) on the two support plates (601) is the same and corresponds one to one. The telescopic ends of the two corresponding first tensioning cylinders (603) on the two support plates (601) are connected to a first bearing seat (604). The first tensioning rollers (605) are rotatably connected to the two first bearing seats (604).

2. The warp let-off mechanism of an air-jet velvet loom according to claim 1, characterized in that: The first driving mechanism comprises a first reduction motor (7) installed on the outside of one of the first wall panels, the first reduction motor is connected to a first transmission shaft via a coupling, the first transmission shaft is connected to a first gear, one end of the first roller (3) is connected to a second gear (8), and the first gear is meshed with the second gear (8).

3. The warp let-off mechanism of an air-jet velvet loom according to claim 2, characterized in that: The second driving mechanism comprises a second reduction motor (9) installed on the outer side of one of the first wall panels, the second reduction motor (9) is connected to a second transmission shaft via a coupling, the second transmission shaft is connected to a third gear, one end of the second roller (4) is connected to a fourth gear (10), and the third gear is meshed with the fourth gear (10).

4. The warp let-off mechanism of an air-jet velvet loom according to claim 3, characterized in that: A second tensioning roller group (11) is installed on one side of the first roller on the first wall panel (1), and the second tensioning roller group (111) includes a fourth roller (1101) rotatably connected to the two first wall panels, a second bearing seat (1102) installed on the upper part of the two first wall panels, a first shaft (1103) rotatably connected to the two second bearing seats (1102), and a first connecting plate (1104) fixedly connected to the opposite ends of the two first shafts (1103). A second tensioning roller (1105) is rotatably connected between the first connecting plates (1104). The second tensioning roller group (11) further includes a second pin shaft (1106) connected to the outer side of the first wall panel. A second tensioning cylinder (1107) is pivotally connected to the second pin shaft (1106). The telescopic end of the second tensioning cylinder (1107) is movably connected to a first connecting rod (1108). The first connecting rod (1108) is fixedly connected to the first shaft rod (1103) on the corresponding side.

5. The warp let-off mechanism of an air-jet velvet loom according to claim 4, characterized in that: The second tensioning roller group (11) also includes a third pin (1109) connected to the outside of the first wall panel and located next to the second pin, the third pin (1109) is connected to a first tensioning spring (1110), the first tensioning spring (1110) is connected to the first connecting rod (1108), and the first tensioning spring (1110) is installed with a first tension sensor (1111).

6. The warp let-off mechanism of an air-jet velvet loom according to claim 5, characterized in that: A third tensioning roller group (12) is installed on one side of the second roller on the first wall panel (1), and the third tensioning roller group (12) includes a third bearing seat (1201) installed at the lower part of the two first wall panels, and the two third bearing seats (1201) are rotatably connected to the second shaft rod (1202), and the opposite ends of the two second shaft rods (1202) are fixedly connected to the second connecting plates (1203), and two third tensioning rollers (1204) are rotatably connected between the two second connecting plates (1203). The third tensioning roller group (1204) also includes a fourth pin shaft (1205) connected to the outer side of the first wall panel, and the fourth pin shaft (1205) is movably connected to the third tensioning cylinder (1206), and the telescopic end of the third tensioning cylinder (1206) is pivotally connected to the second connecting rod (1207), and the second connecting rod (1207) is fixedly connected to the second shaft rod (1202) on the corresponding side.

7. The warp let-off mechanism of an air-jet velvet loom according to claim 6, characterized in that: The third tensioning roller group (12) also includes a fifth pin (1208) connected to the outside of the first wall panel and located next to the fourth pin, the fifth pin (1208) is connected to a second tensioning spring (1209), the second tensioning spring (1209) is connected to the second connecting rod (1207), and the second tensioning spring (1209) is installed with a second tension sensor (1210).

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