Single-sided rapier yarn-hooking weft insertion device and its weft insertion method

Abstract

The present invention provides a unilateral rapier yarn hooking weft insertion device and a weft insertion method thereof, the device comprises a driving mechanism, a rotating clamping mechanism connected to the driving mechanism, and a weft hooking mechanism; the rotating clamping mechanism is located at the weft yarn input end of the loom, and is used to clamp the weft yarn during the weft insertion process to ensure the flatness of the braided body. The rotating clamping mechanism comprises a rotating wheel connected to the driving mechanism, a yarn clamping spring arranged on the circumference of the rotating wheel, and a yarn feeding porcelain eyelet and a closing plate arranged on the weft insertion seat from top to bottom. The present invention arranges a rotating clamping mechanism at the weft yarn input end, and when the weft hooking mechanism inserts the weft, the yarn clamping spring clamps one end of the weft yarn close to the braided body, thereby avoiding the pulling of the weft yarn that has been woven into the braided body by the weft hooking mechanism when inserting the weft, so that the braided body finally prepared remains flat; at the same time, through the mutual cooperation of the driving mechanism, the rotating clamping mechanism and the weft hooking mechanism, the flatness of the braided body is ensured to the greatest extent, while improving the overall efficiency and production capacity of the loom.

Description

Technical Field

[0001] The present invention relates to the technical field of high-performance fiber weaving equipment, and particularly to a single-sided rapier yarn-hooking weft insertion device and a weft insertion method thereof. Background Art

[0002] Rapier looms are the most widely used shuttleless looms at present. Rapier looms mainly achieve weft insertion through rapiers. Rapier weft insertion can precisely control the weft tension and weft density of the loom, thereby achieving high-precision weftwise weaving, and having the advantage of high precision. In addition, rapier weft insertion also has the advantages of high production efficiency, wide application range, simple operation, and uniform weftwise strength of products. Therefore, rapier weft insertion can be applied to the weaving of various fiber materials to obtain fabrics with different properties, so as to meet the needs of different customers.

[0003] At present, most rapier looms on the market adopt the weft insertion method of bidirectional rapier handover. This double-rapier weft insertion method requires cutting the weft yarn during the weaving process, resulting in frayed edges on both sides of the fabric. First, when cutting the weft yarn, the weft yarn may be pulled to varying degrees, thus reducing its strength. Second, the frayed edges on both sides of the fabric need to be hemmed by an additional hemming mechanism to assist in completing the weaving process, which will increase the consumption of weft yarn and thus increase the cost. Moreover, the hemming mechanism is usually suitable for the weaving of single-layer or low-thickness fabrics. When hemming high-thickness and multi-layer fabrics, it is easy to cause weft yarn accumulation, resulting in an uneven fabric surface, which in turn affects the appearance and quality of the product.

[0004] The single-sided rapier weft insertion device uses the method of yarn hooking or yarn feeding to guide the weft yarn from one side of the fabric to the other side, and the weft insertion device only needs to hold the middle part of the weft yarn. This process does not require the use of a hemming mechanism, the device is simple, and it is suitable for the weaving of high-thickness and multi-layer fabrics. The movement stroke of the single-sided weft insertion device needs to be greater than the fabric width. Therefore, for wide-width fabrics, the single-sided rapier weft insertion device needs to have a large movement stroke and movement speed to ensure the weaving speed of the equipment.

[0005] The patent with the authorization announcement number CN204780065U discloses a device for single rapier to draw two weft yarns at one time. This device adopts an independent weft insertion mechanism, and the rapier is pushed by a cylinder to complete the weft insertion action. First, during the weft insertion process of this device, no clamping and stabilizing device is provided at the weft yarn input end. During the weft insertion process, the weft yarn is unevenly stressed, which easily causes the problem of uneven flatness of the fabric. Second, since a cylinder is used to push the rapier to move in this application, for wide-width fabrics, the cylinder needs to have a large stroke to ensure the completion of weft insertion. Third, the movement of the cylinder and the loom is independent of each other. To ensure the smooth completion of weaving, the rotational speed of the equipment must match that of the cylinder, and the reed and the loom need to wait for the rapier movement to complete before moving, which reduces the weaving efficiency of the equipment. In addition, in order to ensure the stable operation of the cylinder for weft insertion, an air pump or an air station needs to be additionally equipped for it, thus increasing the production cost.

[0006] In view of this, it is necessary to design an improved single-sided rapier yarn-hooking weft insertion device and its weft insertion method to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a single-sided rapier yarn-hooking weft insertion device and its weft insertion method. By setting a rotary clamping mechanism at the weft yarn input end, the rotary clamping mechanism includes a rotary wheel connected to a driving mechanism, a clamping reed piece arranged on the circumference of the rotary wheel, and a weft feeding porcelain eye and a closing plate arranged up and down on the weft insertion seat. When the weft hooking mechanism performs weft insertion, the clamping reed piece clamps one end of the weft yarn close to the woven body, avoiding the pulling of the weft yarn that has been woven into the woven body during the weft insertion by the weft hooking mechanism, and making the finally prepared woven body keep flat.

[0008] To achieve the above invention purpose, the present invention provides a single-sided rapier yarn-hooking weft insertion device, including a driving mechanism, a rotary clamping mechanism connected to the driving mechanism, and a weft hooking mechanism; the rotary clamping mechanism is located at the weft yarn input end of the loom and is used to clamp the weft yarn during the weft insertion process to ensure the flatness of the woven body.

[0009] As a further improvement of the present invention, the rotary clamping mechanism includes a rotary wheel connected to the driving mechanism, a clamping reed piece arranged on the circumference of the rotary wheel, and a weft feeding porcelain eye and a closing plate arranged up and down on the weft insertion seat; the weft feeding porcelain eye and the closing plate are located on the side of the rotary wheel close to the loom, and the distance between the closing plate and the rotary wheel is less than the length of the clamping reed piece; the closing plate includes a first closing plate and a second closing plate perpendicular to the rotary wheel, and the first closing plate and the second closing plate are arranged at intervals, and the first closing plate and the second closing plate are used to clamp the clamping reed piece rotating between the first closing plate and the second closing plate, so that the two reed pieces of the clamping reed piece fit together to clamp the weft yarn.

[0010] As a further improvement of the present invention, the gap between the first closing plate and the second closing plate is located in the same vertical plane as the rotating wheel and the yarn clamping reed, so that the yarn clamping reed circulates through the gap between the first closing plate and the second closing plate;

[0011] The width of the gap between the first closing plate and the second closing plate is equal to the distance between the outermost sides of the two reeds of the yarn clamping reed when the two reeds of the yarn clamping reed are in contact with each other.

[0012] As a further improvement of the present invention, rubber pads are provided at the ends of the two reeds of the yarn clamping reed away from the rotating wheel.

[0013] As a further improvement of the present invention, the driving mechanism includes an active rotating mechanism, a driven rotating mechanism transmission-connected to the active rotating mechanism, and a steering mechanism connected to the driven rotating mechanism; the other end of the steering mechanism is connected to the rotating wheel.

[0014] As a further improvement of the present invention, the active rotating mechanism comprises a driving shaft and a driving wheel arranged at one end of the driving shaft; the driven rotating mechanism comprises a driven shaft and a driven wheel arranged at one end of the driven shaft; a transmission belt is arranged between the driving wheel and the driven wheel;

[0015] The steering mechanism comprises a steering box and a steering shaft, wherein one end of the steering box is connected to one end of the driven shaft away from the driven wheel, and the other end is connected to the steering shaft; the other end of the steering shaft passes through the center of the rotating wheel.

[0016] As a further improvement of the present invention, the number of the yarn clamping reeds is equal to the diameter ratio of the driven wheel to the driving wheel.

[0017] As a further improvement of the present invention, when the number of the yarn clamping reeds is greater than or equal to two, the yarn clamping reeds are evenly distributed around the rotating wheel.

[0018] As a further improvement of the present invention, the weft hooking mechanism includes a rapier, a weft hooking rapier head and a reset spring arranged on the rapier, and a wire release plate arranged on the loom; the reset spring and the wire release plate are used to adjust the direction of the weft hooking rapier head, thereby realizing weft hooking and weft release.

[0019] To achieve the above-mentioned object of the invention, the present invention further provides a weft insertion method of the single-sided rapier yarn hooking weft insertion device as described in any one of the above items, comprising the following steps:

[0020] S1. The driving mechanism drives the rotating wheel and the yarn clamping reed to rotate; meanwhile, the weft inserting mechanism reciprocates between the fell of the warp threads; when a yarn clamping reed moves between the first closing plate and the second closing plate to clamp the weft yarn, the weft inserting mechanism passes through the fell of the warp threads to hook the weft yarn;

[0021] S2. When the yarn clamping reed rotates out between the first closing plate and the second closing plate to release the weft yarn, the weft inserting mechanism moves to the other end of the woven body to release the weft yarn, completing one weft insertion operation;

[0022] S3. When the next yarn clamping reed moves between the first closing plate and the second closing plate and clamps the weft yarn, the weft inserting mechanism moves again to hook the weft yarn at the weft yarn input end for the next weft insertion;

[0023] S4. Steps S1 to S3 are continuously repeated until the weaving is completed.

[0024] The beneficial effects of the present invention are as follows:

[0025] (1) For the single - side rapier yarn - hooking weft - inserting device provided by the present invention, by arranging a rotating clamping mechanism at the weft yarn input end, the rotating clamping mechanism includes a rotating wheel connected to the driving mechanism, yarn clamping reeds arranged on the circumference of the rotating wheel, and a yarn feeding porcelain eye and a closing plate arranged vertically on the weft - inserting base. When the weft is inserted, the yarn clamping reeds clamp one end of the weft yarn close to the woven body, avoiding the pulling of the weft yarn that has been woven into the woven body during the weft insertion by the weft inserting mechanism, so that the finally prepared woven body remains flat.

[0026] (2) For the single - side rapier yarn - hooking weft - inserting device provided by the present invention, the driving mechanism is directly connected to the main shaft of the loom, and the rotation of the rotating wheel and the yarn clamping reeds is driven by the rotation of the loom; firstly, no additional power mechanism is required, saving energy and cost; secondly, the driving mechanism and the main shaft of the loom share one power mechanism and have the same rotational speed, so it is easier to match the rotational speeds of the rotating wheel and the yarn clamping reeds with the weft - hooking movement of the weft inserting mechanism.

[0027] The present invention sets the number of yarn clamping reed pieces according to the diameter ratio of the driven wheel and the driving wheel, and makes the yarn clamping reed pieces evenly distributed around the rotating wheel. First, the main shaft of the loom rotates one week to ensure that a yarn clamping reed piece moves between the first closing plate and the second closing plate to clamp the weft yarn. At the same time, every time the main shaft of the loom rotates one week, the weft inserting mechanism performs a weft inserting movement, that is, every time when weft inserting, exactly one yarn clamping reed piece moves between the first closing plate and the second closing plate to clamp the weft yarn; in the whole cycle process, n yarn clamping reed pieces pass between the first closing plate and the second closing plate in turn, and take turns to clamp the weft yarn. Through the mutual cooperation, complementarity and interaction of the driving mechanism, the rotating clamping mechanism and the weft inserting mechanism, the flatness of the woven body is ensured to the greatest extent; at the same time, the overall efficiency and production capacity of the loom are improved.

[0028] (3) The single-sided rapier weft insertion device provided by the present invention can realize double weft in each weft insertion, improve the production efficiency; is refitted on the existing equipment by mechanical means, saving costs; the weft insertion mechanism is integrally connected with the loom, and the reed and the rapier move simultaneously, without reducing the original machine speed of the equipment. Brief Description of the Drawings

[0029] Figure 1 It is a structural diagram of the weft insertion process of the single-sided rapier weft insertion device of the present invention.

[0030] Figure 2 It is a structural diagram of the single-sided rapier weft insertion device of the present invention.

[0031] Figure 3 is Figure 1 a connection diagram of the driving mechanism and the rotating clamping mechanism in

[0032] Figure 4 It is a schematic diagram of the distance between the first closing plate and the second closing plate.

[0033] Figure 5 a is a structural diagram of the weft inserting sword head; Figure 5 b - 5d are connection diagrams of the weft inserting mechanism during the weft insertion process; Figure 5 e is Figure 5 a top view of Figure 5 f is a structural diagram of the yarn unwinding plate.

[0034] Reference Signs

[0035] 1 - Driving mechanism; 2 - Rotating clamping mechanism; 3 - Weft hooking mechanism; 4 - Weft yarn; 11 - Driving shaft; 12 - Driving pulley; 13 - Driven shaft; 14 - Driven pulley; 15 - Transmission belt; 16 - Steering shaft; 17 - Steering box; 21 - Rotating wheel; 22 - Yarn clamping reed; 23 - Yarn feeding porcelain eye; 24 - First closing plate; 25 - Second closing plate; 31 - Rapier rod; 32 - Weft hooking rapier head; 33 - Return spring reed; 34 - Yarn unwinding plate; 311 - Second through hole; 321 - First through hole; 322 - Protrusion. Detailed implementation mode

[0036] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Here, it should also be noted that in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present invention are shown in the drawings, while other details less related to the present invention are omitted.

[0038] In addition, it should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0039] Please refer to Figures 1 to 5 As shown, the present invention provides a unilateral rapier weft hooking and inserting device, including a driving mechanism 1, a rotating clamping mechanism 2 connected to the driving mechanism 1, and a weft hooking mechanism 3. The rotating clamping mechanism 2 is located at the weft yarn input end of the loom (not shown in the figure) ( Figure 1 the B end indicated by the arrow in the figure), and is used to clamp the weft yarn 4 during the weft insertion process to ensure the flatness of the woven body.

[0040] The rotary clamping mechanism 2 includes a rotary wheel 21 connected to the driving mechanism 1, a yarn clamping reed 22 arranged on the circumference of the rotary wheel 21, and a yarn feeding porcelain eye 23 and a closing plate arranged vertically on a weft insertion seat (the weft insertion seat is a conventional setting in the art and is not shown in the figure). The yarn feeding porcelain eye 23 and the closing plate are located on the side of the rotary wheel 21 close to the loom, and the distance between the closing plate and the rotary wheel 21 is less than the length of the yarn clamping reed 22; the closing plate includes a first closing plate 24 and a second closing plate 25 perpendicular to the rotary wheel 21, the first closing plate 24 and the second closing plate 25 are arranged at intervals, and the first closing plate 24 and the second closing plate 25 are used to clamp the yarn clamping reed 22 rotated between the first closing plate 24 and the second closing plate 25, so that the two reeds of the yarn clamping reed 22 are attached to each other to clamp the weft yarn 4. Specifically, the driving mechanism 1 drives the rotary wheel 21 to rotate, the rotary wheel 21 drives the yarn clamping reed 22 to rotate continuously, and circulates through the gap between the first closing plate 24 and the second closing plate 25; when the yarn clamping reed 22 enters the gap between the first closing plate 24 and the second closing plate 25, the two reeds of the yarn clamping reed 22 are attached to each other, and the weft yarn 4 passing through the yarn feeding porcelain eye 23 is clamped; then, the weft hook mechanism 3 hooks the weft yarn 4 located between the yarn feeding porcelain eye 23 and the yarn clamping reed 22 and pulls it towards the warp opening of the woven body to realize weft insertion. With such a setting, when the weft hook mechanism 3 performs weft insertion, the yarn clamping reed 22 clamps one end of the weft yarn 4 close to the woven body ( Figure 1 In the weft yarn 4, the A end is the end close to the woven body, and the woven body is not shown in the figure), avoiding the pulling of the weft yarn 4 that has been woven into the woven body during the weft insertion by the weft hook mechanism 3, so that the finally prepared woven body remains flat.

[0041] As Figures 1 to 3 shown, the gap between the first closing plate 24 and the second closing plate 25 is in the same vertical plane as the rotary wheel 21 and the yarn clamping reed 22, so that the yarn clamping reed 22 circulates through the gap between the first closing plate 24 and the second closing plate 25 during the rotation process. At the same time, the width of the gap between the first closing plate 24 and the second closing plate 25 is equal to the distance between the outermost sides of the two reeds of the yarn clamping reed 22 when the two reeds of the yarn clamping reed 22 are attached to each other. Specifically, as Figure 4 shown in FIGS. 4a and 4b, the middle part of the reed of the yarn clamping reed 22 is convex. When the yarn clamping reed 22 moves between the first closing plate 24 and the second closing plate 25 and contacts the first closing plate 24 and the second closing plate 25, the state of the yarn clamping reed 22 changes from Figure 4 FIG. 4a to Figure 4b. At this time, the width of the gap between the first closing plate 24 and the second closing plate 25 is equal to the distance between the highest points of the relative protrusions when the ends of the two reeds of the clamping reed 22 away from the rotating wheel 21 are in contact (the highest point of the protrusion is the point where the clamping reed 22 contacts the first closing plate 24 and the second closing plate 25 when the clamping reed 22 rotates between the first closing plate 24 and the second closing plate 25). At this time, the weft yarn 4 is clamped at the contacting part of the ends of the two reeds of the clamping reed 22. Rubber pads are provided at the ends of the two leaves of the yarn clamping reed 22 away from the rotating wheel 21. This arrangement can, firstly, ensure the stability of the yarn clamping and avoid the deviation of the weft yarn 4; secondly, the rubber pads have a certain elasticity to avoid clamping the weft yarn 4 too tightly (the rubber pads at the ends of the two leaves of the yarn clamping reed 22 do not need to be too tight, only the weft yarn 4 needs to be slightly clamped, so the rotation of the yarn clamping reed 22 will not be affected during the clamping process of the weft yarn 4); thirdly, the rubber pads have less friction with the weft yarn 4, avoiding damage to the weft yarn 4.

[0042] like Figure 1 As shown, the tops of the first closing plate 24 and the second closing plate 25 are both inclined structures, which makes it easier for the yarn clamping reed 22 to enter between the first closing plate 24 and the second closing plate 25. When the yarn clamping reed 22 rotates to the vertical position of the first closing plate 24 and the second closing plate 25, the ends of the two reeds of the yarn clamping reed 22 will fit together.

[0043] The driving mechanism 1 includes an active rotating mechanism, a driven rotating mechanism connected to the active rotating mechanism, and a steering mechanism connected to the driven rotating mechanism; the other end of the steering mechanism is connected to the rotating wheel 21. In this way, the active rotating mechanism drives the driven rotating mechanism to rotate, which in turn drives the steering mechanism to rotate, and further drives the rotating wheel 21 to rotate.

[0044] The active rotating mechanism includes an active shaft 11 and an active wheel 12 disposed at one end of the active shaft 11; the driven rotating mechanism includes a driven shaft 13 and a driven wheel 14 disposed at one end of the driven shaft 13; a transmission belt 15 is provided between the active wheel 12 and the driven wheel 14. The steering mechanism includes a steering box 17 and a steering shaft 16, one end of the steering box 17 is connected to one end of the driven shaft 13 away from the driven wheel 14, and the other end is connected to the steering shaft 16, and the other end of the steering shaft 16 passes through the center of the rotating wheel 21, thereby driving the rotating wheel 21 to rotate. The active shaft 11 is connected to the main shaft of the loom or to a separate motor.

[0045] When the driving shaft 11 is connected to the main shaft of the loom, the rotation of the main shaft of the loom can drive the driving shaft 11 to rotate, so as to realize the rotation of the rotating wheel 21 and the yarn clamping reed 22. With such a setting, firstly, no additional power mechanism is required, saving energy and cost; secondly, the driving shaft 11 and the main shaft of the loom share one power mechanism and have the same rotational speed, making it easier to match the rotational speeds of the rotating wheel 21 and the yarn clamping reed 22 with the weft inserting motion of the weft inserting mechanism 3. Specifically, the number of yarn clamping reeds 22 arranged on the circumference of the rotating wheel 21 is equal to the diameter ratio of the driven wheel 14 to the driving wheel 12. If the diameter of the driven wheel 14 is n times the diameter of the driving wheel 12 (n is a positive integer), then the number of yarn clamping reeds 22 is n. When n≥2, that is, when the number of yarn clamping reeds 22 is greater than or equal to two, the yarn clamping reeds 22 are evenly distributed around the rotating wheel 21, and the ends of the yarn clamping reeds 22 for clamping the weft yarn 4 face outward. With such a setting, when the main shaft of the loom rotates one week, it drives the driving shaft 11 to rotate one week, and then drives the driven wheel 14 to rotate 1 / n circles. At the same time, every time the main shaft of the loom rotates one week, the weft inserting mechanism 3 performs a weft inserting motion, so that exactly one yarn clamping reed 22 moves between the first closing plate 24 and the second closing plate 25 to clamp the weft yarn 4 during each weft insertion; during the entire cycle process, the n yarn clamping reeds 22 pass between the first closing plate 24 and the second closing plate 25 in sequence, taking turns to clamp the weft yarn 4. After the yarn clamping reed 22 clamps the weft yarn 4, the yarn clamping reed 22 is still in a rotating state, and the time it takes for the yarn clamping reed 22 to be squeezed by the first closing plate 24 and the second closing plate 25 and then rotate out of the gap between the first closing plate 24 and the second closing plate 25 (that is, the time for each yarn clamping reed 22 to clamp the weft yarn 4) is exactly equal to the time it takes for the weft inserting mechanism 3 to pull the weft yarn 4 from one end of the woven body ( Figure 1 the B end indicated by the arrow in Figure 1 to the other end and release the weft ( Figure 1 the C end indicated by the arrow in Figure 1 ). As shown in Figure 1 , in some embodiments, the diameter of the driven wheel 14 is 8 times the diameter of the driving wheel 12, and at this time, the number of yarn clamping reeds 22 is 8.

[0046] When the driving shaft 11 is connected to a separate motor, the number of yarn clamping reeds 22 can also be set by controlling the rotational speeds of the driving shaft 11 and the main shaft of the loom, as well as the diameter ratio of the driving shaft 11 and the driven shaft 14.

[0047] The weft inserting mechanism 3 includes a rapier 31, a weft inserting sword head 32 and a reset reed 33 arranged on the rapier 31, and a weft releasing plate 34 arranged on the loom. The reset reed 33 and the weft releasing plate 34 are used to adjust the direction of the weft inserting sword head 32, so as to realize weft inserting and weft releasing.

[0048] Specifically, as shown in Figure 5As shown in Fig. b, the weft - hooking sword head 32 is rotatably arranged at the head of the sword carrier rod 31, and a return spring piece 33 is arranged at the tail of the weft - hooking sword head 32; As Figure 5 shown in Fig. a, the weft - hooking sword head 32 is provided with a first through - hole 321 and a protrusion 322; The head of the sword carrier rod 31 is provided with a second through - hole 311 that cooperates with the first through - hole 321, and a screw passes through the first through - hole 321 and the second through - hole 311 to rotatably connect the weft - hooking sword head 32 to the head of the sword carrier rod 31. At the same time, the sword carrier rod 31 is provided with a third through - hole for the protrusion 322 to pass through. As Figure 5 shown in Figs. b, 5c, and 5e, during weft - hooking, the return spring piece 32 can hold the weft - hooking sword head 32 by its own elasticity. That is, under the push of the return spring piece 33, the protrusion 322 on the weft - hooking sword head 32 is engaged in the third through - hole, realizing the smooth weft - hooking of the weft - hooking sword head 32; When the weft - hooking sword head 32 drives the weft yarn 4 to pass through the opening of the warp yarn and reaches the other end of the knitting body (that is Figure 1 pulling the weft yarn 4 from the B - end to the C - end of the knitting body), the sword carrier rod 31 drives the weft - hooking sword head 32 to move backward until the protrusion 322 on the weft - hooking sword head 32 contacts the yarn - releasing plate 34. The yarn - releasing plate 34 exerts a certain extrusion force on the protrusion 322, thereby causing the weft - hooking sword head 32 to rotate, forming a state as Figure 5 shown in Fig. d, so that the weft yarn 4 is disengaged from the weft - hooking sword head 32, completing a weft - inserting operation. As Figure 5 shown in Fig. f, one end of the yarn - releasing plate 34 close to the protrusion 322 is provided with an inclined surface, which is convenient for pushing the protrusion 322 out of the third through - hole. The sword - driving power mechanism drives the sword carrier rod 31 to perform reciprocating motion.

[0049] The present invention also provides a weft - inserting method for the above - mentioned single - side rapier weft - hooking device, including the following steps:

[0050] S1. Connect the driving shaft 11 to the main shaft of the loom. The rotation of the main shaft of the loom drives the driving shaft 11 to rotate, and then drives the driven shaft 13 and the steering shaft 16 to rotate, so that the rotating wheel 21 and the yarn - clamping spring piece 22 continuously rotate; At the same time, the sword - driving power mechanism (the sword - driving power mechanism is a conventional setting in the art and is not shown in the figure) drives the sword carrier rod 31 and the weft - hooking sword head 32 to reciprocate between the openings (i.e., the shed) formed by the warp yarns.

[0051] Specifically, every time the driving shaft 11 rotates one week, exactly one yarn - clamping spring piece 22 moves between the first closing plate 24 and the second closing plate 25 to clamp the weft yarn 4. While the yarn - clamping spring piece 22 initially clamps the weft yarn 4, the moving sword carrier rod 31 and the weft - hooking sword head 32 pass through the opening (i.e., the shed) formed by the warp yarns and move to the weft - yarn input end to hook the weft yarn 4, that is, the sword carrier rod 31 and the weft - hooking sword head 32 move from Figure 1 the C - end shown by the arrow in to the B - end shown by the arrow to hook the weft yarn 4. Figure 1The B end indicated by the arrow is the input end of the weft yarn, which is also one end of the braided body. Figure 1 The C end indicated by the arrow is the other end of the braided body.

[0052] The yarn clamping reed 22 continues to rotate in the gap between the first closing plate 24 and the second closing plate 25. At the same time, the weft hook sword head 32 hooks the weft yarn 4 through the opening of the warp yarns and pulls the weft yarn 4 from the input end of the weft yarn to the other end of the braided body, that is, the weft hook sword head 32 pulls the weft yarn 4 from Figure 1 the B end indicated by the arrow to the C end indicated by the arrow.

[0053] S2. When the weft hook sword head 32 moves to the rearmost end ( Figure 1 the C end indicated by the arrow, that is, the other end of the braided body), the yarn feeding plate 34 pushes the protrusion 322 on the weft hook sword head 32, so that the weft hook sword head 32 rotates, causing the weft yarn 4 to escape from the weft hook sword head 32, completing a weft insertion operation. At the same time, the yarn clamping reed 22 on the rotating wheel 21 rotates out of the gap between the first closing plate 24 and the second closing plate 25, and the yarn clamping reed 22 releases the weft yarn 4 to prepare for the next weft insertion.

[0054] The time for the yarn clamping reed 22 to clamp the weft yarn 4 is exactly equal to the time for the weft hook sword head 32 to pull the weft yarn 4 from the B end to the C end of the braided body and release the weft yarn 4. That is, the time from the yarn clamping reed 22 initially clamping the weft yarn 4 to releasing the weft yarn 4 is equal to the time for the weft hook sword head 32 to hook the weft yarn 4 to releasing the weft yarn 4.

[0055] S3. The rotating wheel 21 drives the yarn clamping reed 22 to continue rotating, and the sword transferring rod 31 and the weft hook sword head 32 pass through the opening (i.e., the fell of the cloth) formed by the warp yarns again and move towards the input end of the weft yarn (from Figure 1 the C end indicated by the arrow to the B end indicated by the arrow), for the next weft insertion.

[0056] When the next yarn clamping reed 22 moves between the first closing plate 24 and the second closing plate 25 and clamps the weft yarn 4, the sword transferring rod 31 and the weft hook sword head 32 pass through the opening (i.e., the fell of the cloth) formed by the warp yarns again and reach the input end of the weft yarn to hook the weft yarn 4.

[0057] In this process, first, the time from the previous yarn clamping reed 22 rotating out of the gap between the first closing plate 24 and the second closing plate 25 to the next yarn clamping reed 22 entering between the first closing plate 24 and the second closing plate 25 and initially clamping the weft yarn 4 is equal to the time for the weft hook sword head 32 to move from the end Figure 1 the C end indicated by the arrow) to the input end of the weft yarn ( Figure 1The time taken for the B end (shown by the arrow in the figure) to move. Secondly, during the movement of the weft hook sword head 32 towards the weft yarn input end, when the protrusion 322 on the weft hook sword head 32 disengages from the yarn releasing plate 34, the reset reed 32 pushes the weft hook sword head 32 through its own elasticity, so that the protrusion 322 on the weft hook sword head 32 is engaged in the third through hole on the sword transferring rod 31, realizing the smooth weft hooking of the weft hook sword head 32.

[0058] S4. Continuously repeat steps S1 to S3 until the weaving is completed.

[0059] In summary, the single-sided rapier weft hooking and weft insertion device and its weft insertion method provided by the present invention, by setting a rotating clamping mechanism at the weft yarn input end, the rotating clamping mechanism includes a rotating wheel connected to the driving mechanism, a clamping reed arranged on the circumference of the rotating wheel, and a yarn feeding porcelain eye and a closing plate arranged up and down on the weft insertion seat. When the weft hooking mechanism inserts the weft, the clamping reed clamps one end of the weft yarn close to the woven body, avoiding the pulling of the weft yarn that has been woven into the woven body during the weft insertion by the weft hooking mechanism, so that the finally prepared woven body remains flat; at the same time, through the mutual cooperation of the driving mechanism, the rotating clamping mechanism and the weft hooking mechanism, while ensuring the flatness of the woven body to the greatest extent, the overall efficiency and production capacity of the loom are improved.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A unilateral rapier yarn hooking and weft insertion device, It is characterized in that It includes a driving mechanism, a rotating clamping mechanism connected to the driving mechanism, and a weft hooking mechanism; the rotating clamping mechanism is located at the weft yarn input end of the loom, and is used to clamp the weft yarn during the weft insertion process to ensure the flatness of the woven body; the rotating clamping mechanism includes a rotating wheel connected to the driving mechanism, a yarn clamping reed arranged on the circumference of the rotating wheel, and a yarn feeding porcelain eye and a closing plate arranged upper and lower on the weft insertion seat; the yarn feeding porcelain eye and the closing plate are located on the side of the rotating wheel close to the loom, and the distance between the closing plate and the rotating wheel is less than the length of the yarn clamping reed; the closing plate includes a first closing plate and a second closing plate perpendicular to the rotating wheel, the first closing plate and the second closing plate are arranged at intervals, and the first closing plate and the second closing plate are used to clamp the yarn clamping reed rotated between the first closing plate and the second closing plate, so that the two reeds of the yarn clamping reed fit together to clamp the weft yarn.

2. The single-sided rapier yarn hooking and weft insertion device according to claim 1, It is characterized in that The gap between the first closing plate and the second closing plate is located in the same vertical plane as the rotating wheel and the yarn clamping reed, so that the yarn clamping reed circulates through the gap between the first closing plate and the second closing plate; The width of the gap between the first closing plate and the second closing plate is equal to the distance between the outermost sides of the two reeds of the yarn clamping reed when the two reeds of the yarn clamping reed are in contact with each other.

3. The unilateral rapier yarn hooking and weft insertion device according to claim 2, It is characterized in that The ends of the two reeds of the yarn clamping reed away from the rotating wheel are both provided with rubber pads.

4. The single-sided rapier yarn hooking and weft insertion device according to claim 1, It is characterized in that The driving mechanism comprises an active rotating mechanism, a driven rotating mechanism transmission-connected to the active rotating mechanism, and a steering mechanism connected to the driven rotating mechanism; the other end of the steering mechanism is connected to the rotating wheel.

5. The single-sided rapier yarn hooking and weft insertion device according to claim 4, It is characterized in that The active rotating mechanism comprises an active shaft and an active wheel disposed at one end of the active shaft; the driven rotating mechanism comprises a driven shaft and a driven wheel disposed at one end of the driven shaft; a transmission belt is disposed between the active wheel and the driven wheel; The steering mechanism comprises a steering box and a steering shaft, wherein one end of the steering box is connected to one end of the driven shaft away from the driven wheel, and the other end is connected to the steering shaft; the other end of the steering shaft passes through the center of the rotating wheel.

6. The single-sided rapier yarn hooking and weft insertion device according to claim 5, It is characterized in that The number of the yarn clamping reeds is equal to the diameter ratio of the driven wheel to the driving wheel.

7. The single-sided rapier yarn hooking and weft insertion device according to claim 6, It is characterized in that When the number of the yarn clamping reeds is greater than or equal to two, the yarn clamping reeds are evenly distributed around the rotating wheel.

8. The single-sided rapier yarn hooking and weft insertion device according to claim 1, It is characterized in that The weft hooking mechanism includes a sword rod, a weft hooking sword head and a reset reed provided on the sword rod, and a yarn feeding plate provided on the loom; the reset reed and the yarn feeding plate are used to adjust the direction of the weft hooking sword head, so as to realize weft hooking and weft releasing.

9. A weft insertion method of the single-sided rapier yarn hooking and weft insertion device according to any one of claims 1 to 8, characterized in that: it includes the following steps: S1. The driving mechanism drives the rotating wheel and the yarn clamping reed to rotate; at the same time, the weft hooking mechanism reciprocates between the warp cloth fell formed by the warp yarns; when a yarn clamping reed moves between the first closing plate and the second closing plate to clamp the weft yarn, the weft hooking mechanism passes through the warp cloth fell formed by the warp yarns to hook the weft yarn; S2. When the yarn clamping reed rotates out between the first closing plate and the second closing plate to release the weft yarn, the weft hooking mechanism moves to the other end of the woven body to release the weft yarn, completing one weft insertion operation; S3. When the next yarn clamping reed moves between the first closing plate and the second closing plate and clamps the weft yarn, the weft hooking mechanism moves again to hook the weft yarn at the weft yarn input end for the next weft insertion; S4. Continuously repeat steps S1 to S3 until the weaving is completed.

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