Weft yarn tension adjusting device of warp knitting machine

Abstract

The utility model relates to the technical field of warp knitting machine accessories, and discloses a warp knitting machine weft yarn tension adjusting device which comprises a base. The adjusting structure is arranged on the upper side of the base; the adjusting structure comprises a driving gear arranged on the upper side of the base, a first rotating shaft fixed to the driving gear, a motor arranged on the upper side of the driving gear, a driven gear arranged on one side of the driving gear, a lead screw fixed to the driven gear, a threaded sleeve connected to the lead screw in a threaded mode and a round rod fixed to the threaded sleeve. The clamping blocks fixed to the round rod and the tensioning wheels fixed to the tail end of the round rod enable the displacement range of the tensioning wheels to be enlarged through cooperation of the gears and the lead screws, meanwhile, the displacement of the two tensioning wheels is in central symmetry all the time, and friction of the two tensioning wheels to weft yarn is the same all the time. Therefore, the tension applied to the weft yarn is more uniform while the tensioning wheel is protected, and the adjustment range of the tension and the uniformity of adjustment change are increased.

Description

Technical Field

[0001] The utility model relates to the technical field of warp knitting machine accessories, in particular to a weft tension regulating device for a warp knitting machine. Background Art

[0002] The main loop forming parts of the warp knitting machine are knitting needles, yarn guide needles, sinkers and pressure plates. The knitting needles are installed in a row on the needle bed and move with the needle bed. The yarn guide needles are installed on the strips to form a comb. The warp yarn passes through the eye of the yarn guide needle and moves with the comb to be cushioned on the needle. The fabric is woven through the coordinated movement of the knitting needles, sinkers and other loop forming parts. The warp knitting machine is mainly composed of a weaving mechanism, a comb slidable mechanism, a warp feeding mechanism, a pulling and winding mechanism and a transmission mechanism. Among them, the comb slidable mechanism allows the comb to slidable according to the requirements of the knitted fabric structure during the loop forming process, and the warp yarn is cushioned on the needle, so as to weave a knitted fabric with a certain structure.

[0003] In the prior art, for example, a weft tension device for a warp knitting machine is disclosed in publication number CN210215762U, which states: The weft tension device for the warp knitting machine can limit the weft thread by means of a circular hole, a disc and a strip block, and the weft thread is tightened by means of a winding spring, a rotating shaft, a cross bar and a tensioning wheel, so that the weft thread can be effectively tensioned, and the weft thread is not easily stuck, so that the weft thread is not easily broken.

[0004] In actual use, the tensioning wheels of the above-mentioned device are rotatably connected to the fixed plate through the center axis. When the tensioning wheel tensions the weft yarn, the center axis must be rotated. At this time, the tensioning wheel changes not only in the lateral position but also in the longitudinal position. In this state, the pressures exerted on the two tensioning wheels and the contact areas with the weft yarn are also different. Long-term use will damage the tensioning wheel with a larger contact area with the weft yarn, and excessive contact will easily cause the weft yarn to wear. At the same time, the adjustment range between the above-mentioned tensioning wheels is small and the latter half of the adjustment range does not change the weft tensioning effect much, which is not convenient for subsequent tension adjustment; and when the weft yarn passes through the inner side of the fixed rod through the tensioning wheel, it is easy to rub against the fixed rod, which can easily cause the weft yarn to break. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The invention solves the problem that the two tensioning wheels are subjected to different pressures and the adjustment range is not large and the subsequent adjustment changes are small due to the tension adjustment method of the tensioning wheel; and solves the problem that the weft yarn is easy to rub against the fixed rod when passing through the fixed rod position.

[0007] (II) Technical solution

[0008] To achieve the above object, the utility model provides the following technical solution: a weft tension adjustment device for a warp knitting machine, comprising a base, an inlet end is fixedly connected to the upper side of the base, an outlet end is fixedly connected to the upper side of the base, and a weft yarn is arranged inside the inlet end;

[0009] Also included is an adjustment structure disposed on the upper side of the base;

[0010] The adjustment structure includes a driving gear arranged on the upper side of the base, a first rotating shaft fixed on the driving gear, a motor arranged on the upper side of the driving gear, a driven gear arranged on one side of the driving gear, a screw rod fixed on the driven gear, a threaded sleeve threadedly connected to the screw rod, a round rod fixed on the threaded sleeve, a clamping block fixed on the round rod, and a tensioning wheel fixed at the end of the round rod.

[0011] Preferably, the first rotating shaft passes through the driving gear and is arranged on the motor, and the first rotating shaft is arranged on the lower side of the driven gear, and the first rotating shaft is rotatably connected to the base.

[0012] Preferably, a connecting plate is rotatably connected to the upper side of the screw rod, and a fixing plate is fixedly connected to one side of the connecting plate.

[0013] Preferably, the fixing plate is fixedly connected to the upper side of the base, and the clamping block is slidably connected to the inner side of the fixing plate.

[0014] Preferably, a limiting groove is provided on the fixing plate, and a mounting sleeve is fixedly connected to the motor.

[0015] Preferably, the mounting sleeve is fixedly connected to the base, and a protective structure is provided on the outlet terminal.

[0016] Preferably, the protection structure includes a support frame fixed on the outlet terminal, a support wheel rotatably connected to the support frame, a limiting wheel arranged on the upper side of the support wheel, and a second rotating shaft rotatably connected to the limiting wheel.

[0017] Preferably, one side of the second rotating shaft is fixedly connected to a limiting end, and an upper side of the limiting end is fixedly connected to a spring.

[0018] Preferably, a protruding plate is fixedly connected to the upper side of the spring, and a sliding groove is provided on the outlet end.

[0019] Preferably, the extending plate is fixedly connected to the outlet end, and the limiting end is slidably connected in the outlet end.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the utility model provides a weft yarn tension adjustment device for a warp knitting machine, which has the following beneficial effects:

[0022] 1. The displacement range of the tensioning wheel is increased by the cooperation of the gear and the screw rod, and the displacement of the two tensioning wheels is always centrally symmetrical, so that the friction of the two tensioning wheels on the weft yarn is always the same, thereby protecting the tensioning wheel and making the tension of the weft yarn more uniform, and increasing the adjustment range of the tension and the uniformity of the adjustment change.

[0023] 2. The supporting wheel and the limiting wheel are used to protect the weft yarn passing through the outlet end, so that it will not rub against the inner wall of the outlet end when passing through the outlet end, and the weft yarn will also be limited after it extends out of the outlet end to prevent the weft yarn from deflecting after it extends out of the outlet end. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the utility model when it is not started;

[0025] Figure 2 This is a schematic diagram of the structure of the utility model when it is started;

[0026] Figure 3 This is a schematic diagram of the adjustment structure of the utility model;

[0027] Figure 4 This is a partial structural diagram of the tensioning wheel of the utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the position relationship between the tensioning wheel and the limiting groove of the utility model;

[0029] Figure 6 It is a schematic diagram of the protection structure of the utility model.

[0030] In the figure: 1, base; 11, inlet terminal; 12, outlet terminal; 13, weft yarn; 21, driving gear; 22, first rotating shaft; 23, motor; 24, driven gear; 25, screw rod; 26, threaded sleeve; 27, round rod; 28, block; 29, tensioning wheel; 210, connecting plate; 211, fixing plate; 212, limiting groove; 213, mounting sleeve; 31, supporting frame; 32, supporting wheel; 33, limiting wheel; 34, second rotating shaft; 35, limiting end; 36, spring; 37, extending plate; 38, slide groove. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] Example 1

[0033] Reference Figure 1-5, which is the first embodiment of the utility model, provides a weft tension adjustment device for a warp knitting machine, comprising a base 1, an inlet terminal 11 is fixedly connected to the upper side of the base 1, a clamp spring is arranged inside the inlet terminal 11, and a weft yarn 13 in the inlet terminal 11 can be initially limited, an outlet terminal 12 is fixedly connected to the upper side of the base 1, and a weft yarn 13 is arranged inside the inlet terminal 11;

[0034] It also includes an adjustment structure arranged on the upper side of the base 1;

[0035] The adjustment structure includes a driving gear 21 arranged on the upper side of the base 1, the driving gear 21 and the driven gear 24 are meshed, a first rotating shaft 22 fixed on the driving gear 21, a motor 23 arranged on the upper side of the driving gear 21, a driven gear 24 arranged on one side of the driving gear 21, and a screw rod 25 fixed on the driven gear 24. The threads on the screw rod 25 are all limited in length and do not fill the entire screw rod 25, and the threads on the screw rod 25 are co-directional threads, and the directions of the threads are set to be different. When the driving gear 21 drives the two driven gears 24 to rotate, the two screw rods 25 will be driven to rotate in different directions, so that the threaded sleeves 26 on the two screw rods 25 are displaced in different directions, the threaded sleeves 26 threadedly connected to the screw rod 25, a round rod 27 fixed on the threaded sleeve 26, a block 28 fixed on the round rod 27, and a tensioning wheel 29 fixed at the end of the round rod 27.

[0036] The first rotating shaft 22 penetrates the driving gear 21 and is disposed on the motor 23 . The first rotating shaft 22 is disposed on the lower side of the driven gear 24 . The first rotating shaft 22 is rotatably connected to the base 1 .

[0037] The upper side of the screw rod 25 is rotatably connected to a connecting plate 210 , which is used to limit and connect the screw rod 25 so that the screw rod 25 always remains vertical. A fixing plate 211 is fixedly connected to one side of the connecting plate 210 .

[0038] The fixing plate 211 is fixedly connected to the upper side of the base 1 , the clamping block 28 is slidably connected to the inner side of the fixing plate 211 , and the clamping block 28 is slidably connected in the fixing plate 211 through the limiting groove 212 .

[0039] A limiting groove 212 is provided on the fixing plate 211 , and a mounting sleeve 213 is fixedly connected to the motor 23 .

[0040] The mounting sleeve 213 is fixedly connected to the base 1 , and a protective structure is provided on the outlet terminal 12 .

[0041] During use, when it is necessary to adjust the tension of the weft yarn 13, it is only necessary to start the motor 23. The motor 23 will drive the driving gear 21 to rotate through the first rotating shaft 22, and the driving gear 21 will drive the driven gear 24 to rotate, thereby driving the screw rod 25 on the driven gear 24 to rotate. Since the screw rod 25 is threaded in the same direction but rotates in different directions, it will drive the threaded sleeve 26 threadedly connected to the screw rod 25 to move in the upper and lower directions, so that the tensioning wheel 29 tensions the weft yarn 13 on the upper and lower sides, thereby changing the tension of the weft yarn 13. Continuing to start the motor 23 can adjust the tension of the weft yarn 13. The farther the distance between the two tensioning wheels 29 is, the greater the tension of the weft yarn 13 is, and vice versa. In the initial state of the tensioning wheel 29, the weft yarn 13 is not subject to tension.

[0042] Example 2

[0043] Reference Figure 1-6 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that: the protection structure includes a support frame 31 fixed on the outlet terminal 12, a support wheel 32 rotatably connected to the support frame 31, and there are two support wheels 32 and support frames 31, which are symmetrically arranged on both sides of the outlet terminal 12. The support wheel 32 is used to support the weft yarn 13. The limiting wheel 33 is arranged on the upper side of the support wheel 32. When the weft yarn 13 extends out from the outlet terminal 12, the weft yarn 13 may be offset due to the pulling force in other directions on the weft yarn 13 by the use end, resulting in contact and friction with the outlet terminal 12, and the limiting wheel 33 is used to cooperate with the support wheel 32 to ensure that the weft yarn 13 remains in a neutral position when extending from the outlet terminal 12, and the second rotating shaft 34 rotatably connected to the limiting wheel 33.

[0044] A limiting end 35 is fixedly connected to one side of the second rotating shaft 34 . The limiting end 35 is slidably connected to the outlet end 12 via a sliding groove 38 . A spring 36 is fixedly connected to the upper side of the limiting end 35 .

[0045] An extension plate 37 is fixedly connected to the upper side of the spring 36 , and a sliding groove 38 is provided on the outlet end 12 .

[0046] The extending plate 37 is fixedly connected to the outlet terminal 12 , and the limiting end 35 is slidably connected in the outlet terminal 12 .

[0047] During use, after the weft yarn 13 is tensioned by the tensioning wheel 29, it will preferentially pass through the support wheel 32 close to the adjusting structure. The support wheel 32 can prevent the weft yarn 13 from rubbing against the lower inner wall of the circular hole of the outlet end 12 when passing through the outlet end 12. The weft yarn 13 will then enter the area clamped by the limiting wheel 33 and the other supporting wheel 32, and extend through the area. In this area, the weft yarn 13 will be clamped by the limiting wheel 33 and the supporting wheel 32, so as to maintain a neutral position. When the user end pulls the weft yarn 13 in different directions, the spring 36 will contract to maintain consistent pressure. The displacement of the limiting wheel 33 caused by the contraction of the spring 36 is within an allowable range. Even if the spring 36 is in a fully compressed state, the weft yarn 13 will not leave the area clamped by the limiting wheel 33 and the supporting wheel 32, thereby ensuring that the weft yarn 13 will not contact other objects after leaving the outlet end 12.

[0048] The remaining structures are the same as those of Example 1.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A weft tension adjustment device for a warp knitting machine, comprising a base (1), an inlet end (11) being fixedly connected to the upper side of the base (1), an outlet end (12) being fixedly connected to the upper side of the base (1), and a weft yarn (13) being arranged on the inner side of the inlet end (11); Features: It also includes an adjustment structure arranged on the upper side of the base (1); The adjustment structure comprises a driving gear (21) arranged on the upper side of the base (1), a first rotating shaft (22) fixed on the driving gear (21), a motor (23) arranged on the upper side of the driving gear (21), a driven gear (24) arranged on one side of the driving gear (21), a screw rod (25) fixed on the driven gear (24), a threaded sleeve (26) threadedly connected to the screw rod (25), a round rod (27) fixed on the threaded sleeve (26), a clamping block (28) fixed on the round rod (27), and a tensioning wheel (29) fixed at the end of the round rod (27).

2. A weft tension adjustment device for a warp knitting machine according to claim 1, characterized in that: The first rotating shaft (22) passes through the driving gear (21) and is arranged on the motor (23); the first rotating shaft (22) is arranged on the lower side of the driven gear (24); and the first rotating shaft (22) is rotatably connected to the base (1).

3. The weft tension adjustment device for a warp knitting machine according to claim 1, characterized in that: The upper side of the screw rod (25) is rotatably connected to a connecting plate (210), and one side of the connecting plate (210) is fixedly connected to a fixing plate (211).

4. A weft tension adjustment device for a warp knitting machine according to claim 3, characterized in that: The fixing plate (211) is fixedly connected to the upper side of the base (1), and the clamping block (28) is slidably connected to the inner side of the fixing plate (211).

5. A weft tension adjustment device for a warp knitting machine according to claim 4, characterized in that: A limiting groove (212) is provided on the fixing plate (211), and a mounting sleeve (213) is fixedly connected to the motor (23).

6. A weft tension adjustment device for a warp knitting machine according to claim 5, characterized in that: The mounting sleeve (213) is fixedly connected to the base (1), and a protective structure is provided on the outlet terminal (12).

7. A weft tension adjustment device for a warp knitting machine according to claim 6, characterized in that: The protective structure comprises a support frame (31) fixed on the outlet terminal (12), a support wheel (32) rotatably connected to the support frame (31), a limiting wheel (33) arranged on the upper side of the support wheel (32), and a second rotating shaft (34) rotatably connected to the limiting wheel (33).

8. The weft tension adjustment device for a warp knitting machine according to claim 7, characterized in that: One side of the second rotating shaft (34) is fixedly connected to a limiting end (35), and the upper side of the limiting end (35) is fixedly connected to a spring (36).

9. A weft tension adjustment device for a warp knitting machine according to claim 8, characterized in that: A protruding plate (37) is fixedly connected to the upper side of the spring (36), and a sliding groove (38) is provided on the outlet end (12).

10. The weft tension adjustment device for a warp knitting machine according to claim 9, characterized in that: The extending plate (37) is fixedly connected to the outlet end (12), and the limiting end (35) is slidably connected in the outlet end (12).

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