Warp let-off device for weaving elastic warp knitting cloth

Abstract

The utility model provides a let-off device for weaving elastic warp knitting cloth, which comprises a U-shaped frame, a transverse plate, a plurality of electric push rods, a lower tension mechanism, a second electric push rod, a third electric push rod, an upper tension mechanism and warp yarns, a lower tension mechanism is fixedly mounted at the output end of the electric push rod; a plurality of second electric push rods are evenly distributed and fixedly installed on one side of the transverse plate, a plurality of third electric push rods are evenly distributed and fixedly installed on the other side of the transverse plate, and upper tension mechanisms are fixedly installed at the output ends of the second electric push rods and the output ends of the third electric push rods correspondingly. Due to the overall arrangement, the tension of each warp yarn can be independently adjusted and controlled, the problem of tension deviation of the warp yarns in the let-off process is avoided, and therefore the whole re-let-off process is safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the field of weaving, and in particular to a warp letting-off device for weaving elastic warp knitted fabrics. Background Art

[0002] The warp let-off device is an important component of the warp knitting machine. Its main function is to unwind the warp yarns on the warp beam and feed them into the weaving area.

[0003] After searching, a tension-adjustable warp feeding device for a warp knitting machine disclosed in Chinese patent number CN 214458661 U relates to the field of textile equipment, and includes two support plates, a partition is provided on the side where the two support plates are close to each other, and the two ends of the partition are respectively fixedly connected to the two support plates, and a U-shaped plate is provided above the partition, and both ends of the upper surface of the partition are provided with through grooves that match the two ends of the U-shaped plate, and the two ends of the U-shaped plate pass through the through grooves and extend to the bottom of the partition. The utility model is provided with a U-shaped plate above the partition, and the U-shaped plate and the partition are movably connected by a threaded rod. The U-shaped plate is moved vertically by rotating the threaded rod, and then the lifting roller provided at the bottom end of the U-shaped plate is driven to move vertically, so as to realize the vertical lifting of the warp yarn in transmission, so that it is convenient for the staff to adjust the height of the lifting roller according to the elasticity of the warp yarn itself, so as to straighten the warp yarn and improve the stability of the warp yarn transportation.

[0004] However, the above-mentioned tension-adjustable warp letting device of a warp knitting machine is not convenient for controlling the tension of each warp yarn individually, so that tension deviation occurs during the warp letting process.

[0005] Therefore, it is very necessary to invent a kind of elastic warp knitted cloth and weave a warp let-off device. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a technical solution adopted by a warp feeding device for elastic warp knitted fabric: a warp feeding device for elastic warp knitted fabric, comprising a U-shaped frame, a horizontal plate, an electric push rod, a lower tension mechanism, a second electric push rod, a third electric push rod, an upper tension mechanism and warp yarn, wherein: a horizontal plate is fixedly installed at the opening of the U-shaped frame, and a plurality of electric push rods are evenly fixedly installed on the bottom surface of the U-shaped frame, and a lower tension mechanism is fixedly installed on the output end of the electric push rod; a plurality of electric push rods are evenly fixedly installed on one side of the horizontal plate, and a plurality of electric push rods are evenly fixedly installed on the other side of the horizontal plate, and an upper tension mechanism is fixedly installed on the output ends of the second electric push rod and the third electric push rod;

[0007] Preferably, the upper tension mechanisms on the second electric push rod and the third electric push rod are evenly distributed on both sides of the corresponding lower tension mechanisms;

[0008] Preferably, the lower tension mechanism comprises a connecting column, a compression spring and a supporting column, and a limit cavity is provided at the top of the connecting column; the compression spring is in the limit cavity, and one end of the compression spring is fixedly connected to the connecting column, and the other end of the compression spring is fixedly connected to one end of the supporting column; one end of the supporting column connected to the compression spring is slidably installed in the limit cavity, and a guide mechanism is fixedly installed at the other end of the supporting column; the bottom end of the connecting column is fixedly connected to the output end of the corresponding electric push rod;

[0009] Preferably, the guiding mechanism comprises a U-shaped seat, and the bottom surface of the U-shaped seat is fixedly connected to the top of the support column, and a guide roller is rotatably installed in the opening of the U-shaped seat;

[0010] Preferably, the upper tension mechanism comprises an upper connecting column, an upper compression spring and an upper support column, and an upper limit cavity is opened at one end of the upper connecting column; the upper compression spring is in the upper limit cavity, and one end of the upper compression spring is fixedly connected to one end of the upper connecting column, and the other end of the upper compression spring is fixedly connected to one end of the upper support column; the end of the upper support column connected to the upper compression spring is slidably installed in the upper limit cavity; the other end of the upper support column is fixedly installed with an upper guide mechanism; the other end of the upper connecting column is fixedly connected to the output ends of the corresponding electric push rods 2 and 3;

[0011] Preferably, the upper guide mechanism comprises an upper U-shaped seat, and the bottom surface of the upper U-shaped seat is fixedly connected to the other end of the upper support column, and an upper guide roller is rotatably installed in the opening of the upper U-shaped seat;

[0012] Preferably, the warp yarn passes between the guide roller and the upper guide roller.

[0013] Preferably, fixing holes are respectively formed through the bottom surface and both sides of the U-shaped frame.

[0014] Preferably, a plurality of pressure sensors are evenly and fixedly mounted on the bottom surface of the transverse plate.

[0015] Preferably, strikers corresponding to the pressure sensors are fixedly mounted at both ends of the U-shaped seat opening.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] The overall arrangement of the utility model can individually adjust and control the tension of each warp yarn, avoiding the problem of warp yarn tension deviation during the warp feeding process, thereby making the overall warp feeding process safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2It is a structural schematic diagram of the lower tension mechanism of the utility model.

[0020] Figure 3 It is a structural schematic diagram of the upper tension mechanism of the utility model.

[0021] Figure 4 It is a partial enlarged structural schematic diagram of point A of the utility model.

[0022] In the figure:

[0023] U-shaped frame 1, cross plate 2, electric push rod 3, lower tension mechanism 4, connecting column 41, limit cavity 42, compression spring 43, support column 44, U-shaped seat 45, guide roller 46, striker 47, electric push rod two 5, electric push rod three 6, upper tension mechanism 7, upper connecting column 71, upper limit cavity 72, upper compression spring 73, upper support column 74, upper U-shaped seat 75, upper guide roller 76, warp yarn 8, pressure sensor 9, fixing hole 10. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] Example

[0028] Reference Figure 1-4 , a warp feeding device for elastic warp knitted fabric, comprising a U-shaped frame 1, a horizontal plate 2, an electric push rod 3, a lower tension mechanism 4, an electric push rod 2 5, an electric push rod 3 6, an upper tension mechanism 7 and a warp yarn 8, wherein: a horizontal plate 2 is fixedly installed at the opening of the U-shaped frame 1 to support the electric push rod 2 5 and the electric push rod 3 6, and a plurality of electric push rods 3 are evenly fixedly installed on the bottom surface of the U-shaped frame 1, and a lower tension mechanism 4 is fixedly installed on the output end of the electric push rod 3 to adjust the upward tension of the warp yarn 8; a plurality of electric push rods 2 5 are evenly fixedly installed on one side of the horizontal plate 2, and a plurality of electric push rods 3 6 are evenly fixedly installed on the other side of the horizontal plate 2, and an upper tension mechanism 7 is fixedly installed on the output end of the electric push rod 2 5 and the electric push rod 3 6 to adjust the downward tension of the warp yarn 8;

[0029] The lower tension mechanism 4 includes a connecting column 41, a compression spring 43 and a support column 44, and a limit cavity 42 is provided at the top of the connecting column 41; the compression spring 43 is in the limit cavity 42, and one end of the compression spring 43 is fixedly connected to the connecting column 41, and the other end of the compression spring 43 is fixedly connected to one end of the support column 44; the end of the support column 44 connected to the compression spring 43 is slidably installed in the limit cavity 42, and the other end of the support column 44 is fixedly installed with a guide mechanism; the bottom end of the connecting column 41 is fixedly connected to the output end of the corresponding electric push rod 3; by setting the compression spring 43, after the tension of the warp yarn 8 is adjusted, during the warp feeding process, when the tension of the warp yarn 8 itself changes, it can automatically follow the warp yarn 8 to change, thereby preventing the warp yarn 8 from breaking;

[0030] It should be noted that when the electric push rod 3 is in a fully retracted state, after the compression spring 43 is unfolded, the striker 47 will be in full contact with the pressure sensor 9;

[0031] The guiding mechanism includes a U-shaped seat 45, and the bottom surface of the U-shaped seat 45 is fixedly connected to the top of the support column 44, and a guide roller 46 is rotatably installed in the opening of the U-shaped seat 45 to ensure smoothness of the warp yarn 8 during the conveying process;

[0032] The upper tension mechanism 7 comprises an upper connecting post 71, an upper compression spring 73 and an upper support post 74, and an upper limit cavity 72 is provided at one end of the upper connecting post 71; the upper compression spring 73 is in the upper limit cavity 72, and one end of the upper compression spring 73 is fixedly connected to one end of the upper connecting post 71, and the other end of the upper compression spring 73 is fixedly connected to one end of the upper support post 74; the end of the upper support post 74 connected to the upper compression spring 73 is slidably mounted in the upper limit cavity 72; the other end of the upper support post 74 is fixedly mounted with an upper guide mechanism; the other end of the upper connecting post 71 is fixedly connected to the output ends of the corresponding electric push rods 2 5 and 3 6, and through the setting of the upper compression spring 73, after the tension of the warp yarn 8 is adjusted, when the tension of the warp yarn 8 changes during the warp feeding process, it can automatically follow the warp yarn 8 to change, thereby preventing the warp yarn 8 from breaking;

[0033] The upper guide mechanism includes an upper U-shaped seat 75, and the bottom surface of the upper U-shaped seat 75 is fixedly connected to the other end of the upper support column 74. An upper guide roller 76 is rotatably installed in the opening of the upper U-shaped seat 75 to ensure smoothness of the warp yarn 8 during transportation.

[0034] The warp yarn 8 passes between the guide roller 46 and the upper guide roller 76 so that the tension of the warp yarn 8 can be adjusted.

[0035] The bottom surface and both sides of the U-shaped frame 1 are penetrated with fixing holes 10 so as to fix the warp let-off device for weaving the elastic warp knitted fabric at a desired position.

[0036] Several pressure sensors 9 are evenly distributed and fixedly installed on the bottom surface of the cross plate 2; strikers 47 corresponding to the pressure sensors 9 are fixedly installed at both ends of the opening of the U-shaped seat 45; through the setting of the striker 47 and the pressure sensor 9, after the warp yarn 8 breaks accidentally, under the action of the compression spring 43, the striker 47 will contact the corresponding pressure sensor 9, thereby triggering the pressure sensor 9 to send a signal of the breakage of the warp yarn 8 to the PLC controller, so as to remind the operator to carry out maintenance in time.

[0037] It should be noted that the electrical components involved in this case are all electrically connected to communicate with an external PLC controller.

[0038] In this embodiment, when in use, the warp yarn 8 is allowed to pass between the guide roller 46 and the upper guide roller 76, and then the tension between the guide roller 46 and the upper guide roller 76 and the warp yarn 8 is adjusted respectively by the electric push rod 3, the electric push rod 2 5 and the electric push rod 3 6; after adjustment, if the tension of the warp yarn 8 itself changes during the transportation of the warp yarn 8, the compression spring 43 and the upper compression spring 73 can automatically change with the tension of the warp yarn 8, thereby preventing the warp yarn 8 from breaking; later, when the warp yarn 8 breaks, the corresponding striker 47 will contact the corresponding pressure sensor 9 under the action of the compression spring 43, thereby triggering the pressure sensor 9 to send a signal of the breakage of the warp yarn 8 to the PLC controller, so that the operator can perform maintenance in time.

[0039] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A warp let-off device for elastic warp knitted fabric, characterized in that: The invention comprises a U-shaped frame (1), a horizontal plate (2), an electric push rod (3), a lower tension mechanism (4), a second electric push rod (5), a third electric push rod (6), an upper tension mechanism (7) and a warp yarn (8), wherein: the opening of the U-shaped frame (1) is fixedly mounted with the horizontal plate (2), and a plurality of electric push rods (3) are evenly and fixedly mounted on the bottom surface of the U-shaped frame (1), and the output end of the electric push rod (3) is fixedly mounted with the lower tension mechanism (4); a plurality of second electric push rods (5) are evenly and fixedly mounted on one side of the horizontal plate (2), and a plurality of third electric push rods (6) are evenly and fixedly mounted on the other side of the horizontal plate (2), and the output ends of the second electric push rod (5) and the third electric push rod (6) are each fixedly mounted with an upper tension mechanism (7); The upper tension mechanisms (7) on the electric push rod 2 (5) and the electric push rod 3 (6) are evenly distributed on both sides of the corresponding lower tension mechanisms (4); The lower tension mechanism (4) comprises a connecting column (41), a compression spring (43) and a support column (44), and a limit cavity (42) is provided at the top of the connecting column (41); the compression spring (43) is in the limit cavity (42), and one end of the compression spring (43) is fixedly connected to the connecting column (41), and the other end of the compression spring (43) is fixedly connected to one end of the support column (44); one end of the support column (44) connected to the compression spring (43) is slidably installed in the limit cavity (42), and the other end of the support column (44) is fixedly installed with a guide mechanism; the bottom end of the connecting column (41) is fixedly connected to the output end of the corresponding electric push rod (3); The guiding mechanism comprises a U-shaped seat (45), wherein the bottom surface of the U-shaped seat (45) is fixedly connected to the top end of the support column (44), and a guide roller (46) is rotatably installed in the opening of the U-shaped seat (45); The upper tension mechanism (7) comprises an upper connecting column (71), an upper compression spring (73) and an upper support column (74), and an upper limit cavity (72) is provided at one end of the upper connecting column (71); the upper compression spring (73) is located in the upper limit cavity (72), and one end of the upper compression spring (73) is fixedly connected to one end of the upper connecting column (71), and the other end of the upper compression spring (73) is fixedly connected to one end of the upper support column (74); the end of the upper support column (74) connected to the upper compression spring (73) is slidably installed in the upper limit cavity (72); the other end of the upper support column (74) is fixedly installed with an upper guide mechanism; the other end of the upper connecting column (71) is fixedly connected to the output ends of the corresponding electric push rods 2 (5) and 3 (6); The upper guide mechanism comprises an upper U-shaped seat (75), and the bottom surface of the upper U-shaped seat (75) is fixedly connected to the other end of the upper support column (74), and an upper guide roller (76) is rotatably installed in the opening of the upper U-shaped seat (75); The warp yarn (8) passes between the guide roller (46) and the upper guide roller (76).

2. The warp let-off device for elastic warp knitted fabric according to claim 1, characterized in that: The bottom surface and both sides of the U-shaped frame (1) are each penetrated by fixing holes (10).

3. The warp let-off device for elastic warp knitted fabric according to claim 1, characterized in that: A plurality of pressure sensors (9) are evenly and fixedly mounted on the bottom surface of the transverse plate (2).

4. A warp let-off device for elastic warp knitted fabric as claimed in claim 3, characterized in that: A striker (47) corresponding to the pressure sensor (9) is fixedly mounted at each end of the opening of the U-shaped seat (45).

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