Tensioning anti-loosening device for weft yarn of diagonal loom

Abstract

The utility model discloses a tensioning anti-loosening device for weft yarns of a diagonal loom, relates to the field of textile machinery, and aims to solve the problems that the loom is stopped by mistake or the appearance of a finished cloth cover is finally influenced by the conditions of weft yarn loosening, weft yarn slippage and the like in the weft insertion process of a rapier loom. According to the technical scheme, a yarn guiding wheel set and a yarn outlet wheel set are fixedly arranged on the top wall of a base and distributed on the two sides of a detection hole, a gravity tensioning device is installed between the yarn guiding wheel set and the yarn outlet wheel set, and weft yarn sequentially penetrates through the yarn guiding wheel set, the gravity tensioning device, the detection hole and the yarn outlet wheel set. The effects that the weft yarns are tightened, and the weft yarns are always kept tensioned and pass through the broken weft detector in a non-slip mode under the condition that the weft yarns are not broken, so that error detection is avoided are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of textile machinery, concretely to a tensioning anti-loose device for weft yarn of inclined rod loom. BACKGROUND

[0002] The rapier loom is the most widely used shuttleless loom at present, and it has the characteristics of high speed, high automation degree and high efficiency in addition to the characteristics of the shuttleless loom. In recent years, with the performance of textile machinery equipment becoming more and more perfect, the rapier loom adopts independent motors to directly drive in the weft feeding process to adapt to the characteristics of various weft yarns. Such improvement has a positive significance for the design diversity of civilian fabrics, but in some special industrial fabrics, due to the small surface friction of some varieties of weft yarns or the large rigidity of weft yarns with too large diameter, the rapier loom still has the problems of weft yarn relaxation and weft yarn slippage in the weft feeding process, which causes the loom to stop incorrectly or has a certain influence on the appearance of the finished fabric. SUMMARY

[0003] The utility model aims at providing a tensioning anti-loose device for weft yarn of inclined rod loom.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] The utility model discloses a tensioning anti-loose device for weft yarn of inclined rod loom, including base and weft yarn, the top wall of base is fixedly provided with weft break detector, weft break detector is provided with a plurality of detection holes, the top wall of base is fixedly provided with lead wheel group and line wheel group, lead wheel group and line wheel group are arranged on the both sides of detection hole, the gravity tensioning device is installed between lead wheel group and line wheel group, weft yarn passes lead wheel group, gravity tensioning device, detection hole, line wheel group in proper order and is arranged, the gravity tensioning device includes the sliding plate of through bottom wall arrangement, the bottom end of sliding plate is fixedly provided with counterweight, the top end of sliding plate is rotatably installed with the third guide pulley of line slot, weft yarn passes the bottom end of third guide pulley line slot.

[0006] Through adopting the above technical scheme, when using, weft yarn passes lead wheel group, gravity tensioning device, detection hole, line wheel group in proper order, and lead wheel group cooperates with line wheel group to effectively inhibit the slippage in the up-down direction of weft yarn, the sliding plate is dragged by the counterweight and applies a downward tension to weft yarn through the third guide pulley, when weft yarn is relaxed due to jamming contraction, the third guide pulley is lowered to tighten weft yarn, and weft yarn always keeps tensioning and does not slip through the weft break detector under the condition of no broken line, so that the weft break detector can accurately monitor the weft line condition, avoid loom incorrect stop and affect production efficiency and fabric quality.

[0007] Further, the lead wheel set comprises a vertically arranged mounting plate, the mounting plate is rotationally mounted with first and second rotation shafts which are parallel to each other, the mounting plate is fixedly mounted with one-way bearings which are sleeved with the outer edges of the first and second rotation shafts, the rotation direction of the one-way bearings matches the movement direction of the weft, the outer edge of the first rotation shaft is sleeved with a first guide wheel, the outer edge of the second rotation shaft is sleeved with a second guide wheel which is matched with the first guide wheel, the weft passes through the space between the first and second guide wheels, the side edge of the second guide wheel is provided with an annular baffle which covers the side edge of the first guide wheel, and the lead-out wheel set structure is the same as the lead-in wheel set structure.

[0008] By adopting the above technical scheme, the first and second guide wheels are arranged to match the weft, good friction is generated between the first and second guide wheels and the weft, the up-and-down movement range of the weft is effectively limited, the weft is prevented from slipping in the length direction, the annular baffle has good blocking effect, the weft is effectively prevented from being separated from the first and second guide wheels, the guide and limiting effects are excellent, the one-way bearings have good anti-pulling effect, and the weft is prevented from being pulled by the yarn at one end of the lead-in wheel set to move in the reverse direction and affect the weaving effect.

[0009] Further, the weft breaking detector is fixedly provided with limit wheel sets which are in the same height on two sides, the limit wheel set comprises a support, the support is fixedly arranged on the outer wall of the weft breaking detector, the support is rotationally mounted with a limit guide wheel which is provided with a wire slot at the end, the top of the wire slot is flush with the detection hole, and the height of the lead-in wheel set is lower than that of the limit guide wheel.

[0010] By adopting the above technical scheme, the limit guide wheel has good guiding effect, the weft passes through the wire slot on the limit guide wheel, the wire slot also has good limiting effect and can inhibit the horizontal sliding of the weft, and the tight straight line is ensured to pass through the detection under the action of the gravity tensioning device.

[0011] Further, a plurality of scale grooves are formed in the outer wall of the sliding plate along the length direction.

[0012] By adopting the above technical scheme, the scale grooves can clearly and intuitively display the up-and-down sliding position of the sliding plate, the operator can intuitively judge the relaxation degree of the weft, when the sliding plate moves downward by a certain distance to reach a threshold value, the weft is most likely to be broken or excessively relaxed, the operator can be assisted to judge the state of the weft, and the scale grooves have good display effect.

[0013] In summary, the beneficial technical effects of the utility model are as follows:

[0014] 1. The lead wheel set, the gravity tensioning device and the lead-out wheel set are adopted, so that the third guide wheel is lowered to tighten the weft, the weft is kept in tension without sliding through the weft breaking detector under the condition that the weft is not broken, and the effect of avoiding false detection is achieved.

[0015] 2, the first guide wheel, the second guide wheel, the ring baffle, thereby generating effective limit the range of weft yarn up and down activity, while effectively avoiding the yarn pulling the end of the thread wheel set to pull the weft yarn reverse slip effect of affecting the quality of woven fabric;

[0016] 3, the limiting guide wheel is adopted, thereby generating the effect of inhibiting the horizontal slip of weft yarn, ensuring the tight straight line under the action of the gravity tensioning device, and avoiding the effect of false detection by detection. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and do not constitute a limitation of the present application. In the drawings:

[0018] Figure 1 is the overall structure of the present application schematic diagram;

[0019] Figure 2 is Figure 1 A part of the structure of the present application schematic diagram.

[0020] In the figure, 1, weft yarn; 2, base; 3, weft yarn detector; 31, detection hole; 4, lead wheel set; 5, thread wheel set; 6, gravity tensioning device; 61, sliding plate; 62, counterweight; 63, third guide wheel; 7, mounting plate; 71, first rotating shaft; 72, second rotating shaft; 711, first guide wheel; 721, second guide wheel; 73, one-way bearing; 74, ring baffle; 8, limiting wheel set; 81, support; 82, limiting guide wheel; 9, scale groove. DETAILED DESCRIPTION

[0021] The present application will be further described in detail below in conjunction with the accompanying drawings.

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0023] Please refer to Figures 1-2 The present application provides technical solutions:

[0024] The base 2 and the weft yarn 1 are included, the top wall of the base 2 is fixedly provided with a weft breakage detector 3, a plurality of detection holes 31 are provided through the weft breakage detector 3, the top wall of the base 2 is fixedly provided with a lead-in wheel set 4 and an outgoing wheel set 5, the lead-in wheel set 4 and the outgoing wheel set 5 are arranged on both sides of the detection hole 31, and a gravity tension device 6 is arranged between the lead-in wheel set 4 and the outgoing wheel set 5; the weft yarn 1 passes through the lead-in wheel set 4, the gravity tension device 6, the detection hole 31 and the outgoing wheel set 5 in sequence; the gravity tension device comprises a sliding plate 61 provided through the bottom wall, a counterweight 62 fixedly arranged at the bottom end of the sliding plate 61, and a third guide wheel 63 with a wire slot rotatably arranged at the top end of the sliding plate 61; the weft yarn 1 passes through the bottom end of the wire slot of the third guide wheel 63; in use, the weft yarn 1 passes through the lead-in wheel set 4, the gravity tension device 6, the detection hole 31 and the outgoing wheel set 5 in sequence; the lead-in wheel set 4 cooperates with the outgoing wheel set 5 to effectively suppress the upward and downward sliding of the weft yarn 1; the sliding plate 61 applies a downward tension to the weft yarn 1 through the third guide wheel 63 under the dragging of the counterweight 62; when the weft yarn 1 is loosened due to blockage and contraction, the third guide wheel 63 is lowered to tighten the weft yarn 1; the weft yarn 1 always remains tensioned and does not slip through the weft breakage detector 3 without breaking, so that the weft breakage detector 3 can accurately monitor the weft condition and avoid false stopping of the loom, thereby affecting the production efficiency and the quality of the finished fabric.

[0025] The lead-in wheel set 4 comprises a vertically arranged mounting plate 7, the mounting plate 7 is rotatably provided with first and second rotating shafts 71 and 72 parallel to each other, the mounting plate 7 is fixedly embedded with a one-way bearing 73 sleeved with the outer edges of the first and second rotating shafts 71 and 72, the rotating direction of the one-way bearing 73 matches the movement direction of the weft yarn 1, the outer edge of the first rotating shaft 71 is sleeved with a first guide wheel 711, the outer edge of the second rotating shaft 72 is sleeved with a second guide wheel 721 abutting the first guide wheel 711, the weft yarn 1 is arranged between the first and second guide wheels 711 and 721, and the second guide wheel 721 is provided with an annular baffle 74 extending on the side of the first guide wheel 711; the outgoing wheel set 5 has the same structure as the lead-in wheel set; the first and second guide wheels 711 and 721 have good friction with the weft yarn 1, effectively limiting the upward and downward movement range of the weft yarn 1, and avoiding the lengthwise sliding of the weft yarn 1; meanwhile, the annular baffle 74 has good blocking effect, which can effectively prevent the weft yarn 1 from separating from the first and second guide wheels 711 and 721, and has excellent guiding and limiting effect; the one-way bearing 73 has good anti-pulling effect, which effectively avoids the pulling of the yarn at one end of the lead-in wheel set to pull the weft yarn 1 in the reverse direction, thereby affecting the weaving effect.

[0026] The equal-height limiting wheel set 8 is fixed on both sides of the weft break detector 3, and includes a support 81 fixed on the outer wall of the weft break detector 3, and a limiting guide wheel 82 with a wire slot rotatably installed at the end of the support 81, wherein the top of the wire slot is flush with the detection hole 31, and the height of the entry wheel set is lower than that of the limiting guide wheel 82.

[0027] The outer wall of the sliding plate 61 is provided with a plurality of scale grooves 9 along the length direction, which can clearly and intuitively display the up-and-down sliding position of the sliding plate 61, and facilitate the operator to intuitively judge the relaxation degree of the weft yarn 1.

[0028] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying any such actual relationship or order between or among the entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that comprises a list of elements does not only include those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0029] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A kind of oblique pole loom weft (1) with tension slack prevention device, including base (2) and weft (1), the top wall of base (2) is fixed with weft break detector (3), weft break detector (3) is provided with a plurality of detection holes (31) through, it is characterized by: The base (2) top wall is fixedly provided with a lead-in wheel set (4) and an outgoing wheel set (5), the lead-in wheel set (4) and the outgoing wheel set (5) are arranged on both sides of the detection hole (31), the gravity tension device (6) is arranged between the lead-in wheel set (4) and the outgoing wheel set (5), the weft (1) passes through the lead-in wheel set (4), the gravity tension device (6), the detection hole (31) and the outgoing wheel set (5) in sequence, the gravity tension device comprises a sliding plate (61) penetrating through the bottom wall, the sliding plate (61) is fixedly provided with a counterweight (62) at the bottom end, a third guide wheel (63) with a wire slot is rotatably installed at the top end of the sliding plate (61), and the weft (1) passes through the bottom end of the wire slot of the third guide wheel (63).

2. A slack-free tensioning device for the weft yarn (1) of a rapier loom according to claim 1, characterized in that: The lead-in wheel set (4) comprises a vertically arranged mounting plate (7), the mounting plate (7) is rotatably provided with a first rotating shaft (71) and a second rotating shaft (72) parallel to each other, the mounting plate (7) is fixedly embedded with a one-way bearing (73) sleeved with the outer edges of the first rotating shaft (71) and the second rotating shaft (72), the rotating direction of the one-way bearing (73) matches the movement direction of the weft (1), the outer edge of the first rotating shaft (71) is sleeved with a first guide wheel (711), the outer edge of the second rotating shaft (72) is sleeved with a second guide wheel (721) abutting the first guide wheel (711), the weft (1) passes through the space between the first guide wheel (711) and the second guide wheel (721), and the second guide wheel (721) is provided with an annular baffle (74) extending on the side of the first guide wheel (711).

3. A slack-elasticizing device for the weft yarn (1) of a rapier loom according to claim 2, characterized in that: The breakage detector (3) is fixedly provided with an equal-height limiting wheel set (8) on both sides, the limiting wheel set (8) comprises a support (81), the support (81) is fixedly arranged on the outer wall of the breakage detector (3), and the support (81) is rotatably installed at the end position of the limiting guide wheel (82) with a wire slot.

4. A slack-elasticizing device for the weft yarn (1) of a rapier loom according to claim 3, characterized in that: The outer wall of the sliding plate (61) is provided with a plurality of scale grooves (9) along the length direction.

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