Main nozzle support control system on air jet loom

Abstract

The invention relates to the related technical field of control adjusting mechanisms, in particular to a main nozzle support control system on an air jet loom, which comprises a telescopic electric cylinder, a main nozzle support and a main nozzle, a cylinder body of the telescopic electric cylinder is fixedly arranged on the loom main support, and the main nozzle support is fixedly connected with a telescopic rod on the telescopic electric cylinder. The height of the main nozzle support is adjusted through a telescopic electric cylinder, the main nozzle is fixedly connected with the main nozzle support through a connecting support, and the main nozzle is formed by combining a mounting pipe, a front cover plate, a rear cover plate, an air nozzle and an air supply base. By arranging the main nozzle support control system composed of the telescopic electric cylinder, the main nozzle support and the main nozzle in a combined mode, the height position of the main nozzle can be adjusted conveniently, and the main nozzle and spinning silk threads on the main support of the weaving machine can be aligned and adjusted conveniently.

Description

Technical Field

[0001] The invention relates to the technical field related to a control and regulating mechanism, and in particular to a main nozzle bracket control system on an air jet loom. Background Art

[0002] Air jet loom is a shuttleless loom that uses jet airflow to pull the weft yarn through the shed. The working principle is to use air as the weft insertion medium, and use the jetted compressed airflow to generate friction traction on the weft yarn to pull the weft yarn through the shed, and achieve the purpose of weft insertion through the jet generated by the air jet; The existing Chinese patent document with announcement number CN101463525A discloses a measuring device for the motion state of the weft guide end when the air jet loom inserts the weft. The scheme includes a measuring device for the motion state of the weft guide end when the air jet loom inserts the weft. The air jet loom weft insertion system includes a weft storage device, a yarn stop pin arranged on the weft storage device for controlling the release of the yarn, a special-shaped steel reed, a main nozzle corresponding to the shed of the special-shaped steel reed, a plurality of auxiliary nozzles arranged along the reed width, and an airflow supply mechanism. The special-shaped steel reed is composed of a plurality of reed blades, and each reed composed of reed blades is inserted in a reed seat. The measuring device includes a plurality of photoelectric weft detectors, and the plurality of photoelectric weft detectors are distributed along the reed width. Each photoelectric weft detector includes a light emitting diode, a main nozzle in a straight line with the light emitting diode, and a main nozzle in a straight line with the light emitting diode. The photocell on the top, the photoelectric weft probe is used to collect the weft information arriving at its position and convert it into an electrical signal for output; a measuring device, the measuring device is connected to the output end of each photoelectric weft probe, the measuring device is used to receive and amplify the output signal of each photoelectric weft probe and determine the time and speed of the weft arriving at the position of each photoelectric weft probe in combination with the position of the yarn stop pin and the main nozzle outlet position; a weft insertion motion curve analyzer, the weft insertion motion curve analyzer is connected to the output end of the measuring device, and the weft insertion motion curve analyzer processes according to the data output by the measuring device; a main control board, the main control board is connected between the weft insertion motion curve analyzer and the airflow supply mechanism, and the main control board controls the action time of the yarn stop pin, the main nozzle, and the auxiliary nozzle; However, the main nozzle structure in the above technical solution is relatively simple, and the gas pressure ejected by the main nozzle can only be determined by the gas pressure of the air supply unit. If the gas source pressure directly provides a higher pressure, it will not only lead to higher equipment operating costs, but also because the main nozzle is operated intermittently, the main nozzle will be subjected to a higher pressure at the moment of stopping, which can easily affect the actual service life of the main nozzle. For this reason, the present invention proposes a main nozzle bracket control system on a jet loom to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a main nozzle support control system on an air jet loom to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a main nozzle bracket control system on an air jet loom, comprising: A telescopic electric cylinder, the cylinder body of which is fixedly mounted on the main support of the loom; A main nozzle bracket, wherein the main nozzle bracket is fixedly connected to the telescopic rod on the telescopic electric cylinder, and the main nozzle bracket is height-adjustable by the telescopic electric cylinder; A main nozzle, wherein the main nozzle is fixedly connected to a main nozzle bracket via a connecting bracket; The main nozzle is composed of a mounting tube, a front cover plate, a rear cover plate, an air nozzle and an air supply seat.

[0005] Preferably, the air nozzle and the mounting tube are integrally formed, and the air nozzle is arranged corresponding to the textile thread on the main support of the loom, the front and rear end faces of the mounting tube are provided with screw holes, the front cover plate and the rear cover plate are fixed to the mounting tube by positioning screws, and a rotating shaft is integrally formed on the air supply seat, and the rotating shaft is rotatably mounted on the front cover plate by a ball bearing, and the air supply seat and the mounting tube are coaxially arranged.

[0006] Preferably, the air supply seat is a scanning body structure with a convex-shaped cross-section, and a main airway and a secondary airway are provided on the air supply seat, the rotating shaft is a tubular body structure, and the tube cavity of the rotating shaft is connected to the main airway, the secondary airway is connected to the main airway, and the secondary airway passes through the side wall of the air supply seat, and the port of the secondary airway is located in the middle position of the side wall of the air supply seat, and when the secondary airway is rotated to a horizontal direction, the secondary airway is aligned with the inner port of the air nozzle, and a drainage groove is provided at the port position of the secondary airway, and the drainage groove is crescent-shaped.

[0007] Preferably, the air supply seat is composed of an air supply seat body and a sealing layer. The air supply seat body is cast from steel, the sealing layer is a flexible rubber layer, and the sealing layer is located in the middle of the side wall of the air supply seat body, and the sealing layer and the air supply seat body are fixedly glued, the drainage groove is opened on the sealing layer, and the main air duct and the secondary air duct are opened on the air supply seat body. When the air supply seat is actually installed, the outer wall of the sealing layer is tightly fitted with the inner wall of the mounting tube.

[0008] Preferably, a servo motor is fixedly mounted on the connecting bracket, a transmission sprocket is fixedly mounted on the output shaft of the servo motor, a driven sprocket is fixedly mounted on the rotating shaft, the transmission sprocket and the driven sprocket are transmission-connected via a transmission chain, a bearing groove is opened at the tubular port position of the rotating shaft, a sealed bearing is fixedly mounted in the bearing groove, an air supply pipe is fixedly mounted in the bearing inner ring of the sealed bearing, the air supply pipe is a hard steel pipe, the air supply pipe is fixed to the main nozzle bracket via a positioning bracket, and the other end of the air supply pipe is connected to the air supply port of the air supply equipment.

[0009] Preferably, the telescopic electric cylinder, servo motor and air supply equipment are all connected to the control module on the main support of the loom via electrical signals.

[0010] Preferably, a group of boosting chambers are symmetrically opened on both sides of the air supply seat, and the boosting chambers are connected with the main airway through a connecting airway. A piston is movably arranged in the boosting chamber, and a force-bearing seat is arranged on the inner wall of the mounting tube. The cross-section of the force-bearing seat is crescent-shaped, and a group of force-bearing seats are symmetrically arranged, and a gap is left between the force-bearing seats on both sides.

[0011] Preferably, the outer end of the piston is hemispherical, and the inner end of the piston is provided with a spring groove, the bottom of the spring groove is fixedly connected to a support spring, and when the support spring is in a reset state, the outer end of the piston is arranged to abut against the inner wall of the mounting tube, and when the piston moves along the force seat until the support spring is in a maximum compression state, the secondary air duct is aligned with the air nozzle.

[0012] Preferably, the outer wall of the force-bearing seat is integrally formed with a connecting ear plate, a mounting hole is opened on the connecting ear plate, and a bolt hole is opened on the inner wall of the mounting tube. The mounting hole and the bolt hole are relatively aligned, and the connecting ear plate is fixed to the inner wall of the mounting tube by a positioning bolt, and the screw hole and the bolt hole are staggered.

[0013] Preferably, a main air groove is provided on the inner end of the piston, and a sealing air groove is provided on the outer wall of the piston. The sealing air groove is an annular groove with a semicircular cross-section, and the sealing air groove is connected to the main air groove through a connecting air groove. An annular sealing rubber layer is integrally formed at the port position of the sealing air groove, and when the air supply seat moves in the mounting tube, the annular sealing rubber layer is always completely in the boosting chamber.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. A main nozzle support control system consisting of a telescopic electric cylinder, a main nozzle support and a main nozzle assembly is provided to adjust the height position of the main nozzle so as to align the main nozzle with the textile thread on the main support of the loom; 2. The main nozzle is configured to be composed of a mounting tube, a front cover plate, a rear cover plate, an air nozzle and an air supply seat, and a main air channel, a secondary air channel and a pressurizing chamber are opened on the air supply seat, a piston is arranged in the pressurizing chamber, and a force seat is arranged on the inner wall of the mounting tube, so that the piston moves along the force seat to store air when the main nozzle stops jetting, and to increase pressure when the main nozzle jets, so that the two functions of intermittent jetting and gas pressurization are realized through a single mechanism, thereby effectively optimizing the jet system on the jet loom. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the installation position of the main nozzle of the present invention; Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 This is a schematic diagram of the main nozzle structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the main nozzle of the present invention; Figure 6 It is a schematic diagram of the structure of the force bearing seat of the present invention; Figure 7 It is a transverse half-section view of the air supply seat of the present invention; Figure 8 for Figure 7 A magnified schematic diagram of the structure at B in the middle; Fig. 9 A longitudinal half-section view of the air supply seat of the present invention; Fig.10 A half-section view of the main nozzle of the present invention; Fig.11 for Fig.10 A magnified schematic diagram of the structure at C in the middle; Fig.12 for Fig.11 Enlarged schematic diagram of the structure at point D in the middle.

[0016] In the figure: a loom main bracket 1, a telescopic electric cylinder 2, a main nozzle bracket 3, a main nozzle 4, a textile thread 5, a connecting bracket 6, a mounting tube 7, a front cover plate 8, a rear cover plate 9, an air nozzle 10, an air supply seat 11, a screw hole 12, a positioning screw 13, a rotating shaft 14, a ball bearing 15, a main air channel 16, a secondary air channel 17, a drainage groove 18, a servo motor 19, a transmission sprocket 20, a driven sprocket 21, a transmission chain 22, a sealing bearing 23, an air supply pipeline 24, a positioning bracket 25, an air supply seat body 26, a sealing layer 27, a booster chamber 28, a connecting air channel 29, a piston 30, a supporting spring 31, a force bearing seat 32, a connecting ear plate 33, a mounting hole 34, a positioning bolt 35, a main air groove 36, a sealing air groove 37, a connecting air groove 38, and an annular sealing rubber layer 39. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-12 The present invention provides the following three preferred embodiments: Embodiment 1: A main nozzle bracket control system on an air jet loom comprises a telescopic electric cylinder 2, a main nozzle bracket 3 and a main nozzle 4, wherein the cylinder body of the telescopic electric cylinder 2 is fixedly mounted on the main bracket 1 of the loom, the main nozzle bracket 3 is fixedly connected to the telescopic rod on the telescopic electric cylinder 2, and the main nozzle bracket 3 is height-adjusted by the telescopic electric cylinder 2, the main nozzle 4 is fixedly connected to the main nozzle bracket 3 by a connecting bracket 6, and the main nozzle 4 is composed of a mounting tube 7, a front cover plate 8, a rear cover plate 9, an air nozzle 10 and an air supply seat 11. By setting a main nozzle bracket control system composed of the telescopic electric cylinder 2, the main nozzle bracket 3 and the main nozzle 4, the height position of the main nozzle 4 can be adjusted, so that the main nozzle 4 can be aligned and adjusted with the textile thread 5 on the main bracket 1 of the loom.

[0019] The air nozzle 10 and the mounting tube 7 are integrally formed, and the air nozzle 10 is arranged corresponding to the textile thread 5 on the main bracket 1 of the loom. Screw holes 12 are provided on the front and rear end faces of the mounting tube 7. The front cover plate 8 and the rear cover plate 9 are fixed to the mounting tube 7 by positioning screws 13. A rotating shaft 14 is integrally formed on the air supply seat 11. The rotating shaft 14 is rotatably mounted on the front cover plate 8 through a ball bearing 15. The air supply seat 11 and the mounting tube 7 are coaxially arranged.

[0020] Embodiment 2: On the basis of embodiment 1, the air delivery seat 11 is a scanning body structure with a convex cross-section, and a main airway 16 and a secondary airway 17 are provided on the air delivery seat 11, the rotating shaft 14 is a tubular structure, and the lumen of the rotating shaft 14 is connected to the main airway 16, and the secondary airway 17 is connected to the main airway 16, and the secondary airway 17 runs through the side wall of the air delivery seat 11, and the port of the secondary airway 17 is located in the middle of the side wall of the air delivery seat 11, and when the secondary airway 17 is rotated to the horizontal direction, the secondary airway 17 is aligned with the inner port of the air nozzle 10, and a drainage groove 18 is provided at the port position of the secondary airway 17, and the drainage groove 18 is crescent-shaped, and the air delivery seat 11 is provided with a drainage groove 18. The air seat 11 is composed of an air supply seat body 26 and a sealing layer 27. The air supply seat body 26 is cast from steel, the sealing layer 27 is a flexible rubber layer, and the sealing layer 27 is located in the middle of the side wall of the air supply seat body 26, and the sealing layer 27 and the air supply seat body 26 are fixedly glued, the drainage groove 18 is opened on the sealing layer 27, the main air channel 16 and the secondary air channel 17 are opened on the air supply seat body 26. When the air supply seat 11 is actually installed, the outer wall of the sealing layer 27 is tightly fitted with the inner wall of the mounting tube 7. The setting of the sealing layer 27 can improve the sealing between the structures, thereby ensuring that the gas in the air supply seat 11 can be stably delivered to the main nozzle 4.

[0021] A servo motor 19 is fixedly mounted on the connecting bracket 6, a driving sprocket 20 is fixedly mounted on the output shaft of the servo motor 19, a driven sprocket 21 is fixedly mounted on the rotating shaft 14, the driving sprocket 20 and the driven sprocket 21 are connected by a transmission chain 22, a bearing groove is opened at the tube end position of the rotating shaft 14, a sealed bearing 23 is fixedly mounted in the bearing groove, an air supply pipe 24 is fixedly mounted in the inner ring of the bearing of the sealed bearing 23, the air supply pipe 24 is a hard steel pipe, the air supply pipe 24 is fixed to the main nozzle bracket 3 through a positioning bracket 25, and the other end of the air supply pipe 24 is connected to the air supply port of the air supply equipment, the telescopic electric cylinder 2, the servo motor 19, and the air supply equipment are all connected to the control module on the main bracket 1 of the loom by electrical signals.

[0022] A group of boosting chambers 28 are symmetrically provided on both sides of the air supply seat 11. The boosting chambers 28 are connected to the main air channel 16 through the connecting air channel 29. A piston 30 is movably provided in the boosting chamber 28. A force-bearing seat 32 is provided on the inner wall of the mounting tube 7. The cross-section of the force-bearing seat 32 is crescent-shaped, and a group of force-bearing seats 32 are symmetrically provided, and a gap is left between the force-bearing seats 32 on both sides. The outer end of the piston 30 is hemispherical, and the hemispherical setting can reduce the contact friction between the piston 30 and the force-bearing seat 32. A spring groove is provided on the inner end of the piston 30, and a support spring 31 is fixedly connected to the bottom of the spring groove. When the support spring 31 is in a reset state, the outer end of the piston 30 is against the inner wall of the mounting tube 7, and the movable When the plug 30 moves along the force seat 32 until the support spring 31 is in the maximum compression state, the secondary air channel 17 is aligned with the air nozzle 10. By setting the main nozzle 4 to be composed of the mounting tube 7, the front cover plate 8, the rear cover plate 9, the air nozzle 10 and the air supply seat 11, and by opening the main air channel 16, the secondary air channel 17 and the boosting chamber 28 on the air supply seat 11, and arranging the piston 30 in the boosting chamber 28, and arranging the force seat 32 on the inner wall of the mounting tube 7, the piston 30 moves along the force seat 32 to store air when the main nozzle 4 suspends jetting, and to boost pressure when the main nozzle 4 jets, the two functions of intermittent jetting and gas boosting are realized through a single mechanism, thereby effectively optimizing the jet system on the jet loom.

[0023] The outer wall of the force-bearing seat 32 is integrally formed with a connecting ear plate 33, and a mounting hole 34 is opened on the connecting ear plate 33. A bolt hole is opened on the inner wall of the mounting tube 7. The mounting hole 34 and the bolt hole are relatively aligned, and the connecting ear plate 33 is fixed to the inner wall of the mounting tube 7 by a positioning bolt 35. The screw hole 12 and the bolt hole are staggered to improve the convenience of disassembly and assembly of the force-bearing seat 32 and facilitate daily maintenance of the structure.

[0024] Embodiment 3: On the basis of embodiment 2, a main air groove 36 is provided on the inner end of the piston 30, and a sealing air groove 37 is provided on the outer wall of the piston 30. The sealing air groove 37 is an annular groove with a semicircular cross-section, and the sealing air groove 37 is connected to the main air groove 36 through a connecting air groove 38. An annular sealing rubber layer 39 is integrally formed at the port position of the sealing air groove 37. When the air supply seat 11 moves in the mounting tube 7, the annular sealing rubber layer 39 is always completely in the boost chamber 28. By providing the main air groove 36, the sealing air groove 37 and the connecting air groove 38 on the piston 30, and arranging the annular sealing rubber layer 39 at the port of the sealing air groove 37, the internal pressure of the boost chamber 28 increases when the piston 30 is pressed inward, thereby causing the internal pressure of the sealing air groove 37 to increase, thereby driving the annular sealing rubber layer 39 to expand, thereby improving the sealing of the piston 30, thereby improving the boost effect.

[0025] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A main nozzle support control system on an air jet loom, characterized in that: include: A telescopic electric cylinder (2), wherein the cylinder body of the telescopic electric cylinder (2) is fixedly mounted on the main support (1) of the loom; A main nozzle bracket (3), wherein the main nozzle bracket (3) is fixedly connected to the telescopic rod on the telescopic electric cylinder (2), and the main nozzle bracket (3) is height-adjustable via the telescopic electric cylinder (2); A main nozzle (4), wherein the main nozzle (4) is fixedly connected to the main nozzle bracket (3) via a connecting bracket (6); The main nozzle (4) is composed of a mounting tube (7), a front cover plate (8), a rear cover plate (9), an air nozzle (10) and an air supply seat (11).

2. The main nozzle support control system on the air jet loom according to claim 1, characterized in that: The air nozzle (10) and the mounting tube (7) are integrally formed, and the air nozzle (10) is arranged corresponding to the textile thread (5) on the main support (1) of the loom. The front and rear end surfaces of the mounting tube (7) are both provided with screw holes (12). The front cover plate (8) and the rear cover plate (9) are both fixed to the mounting tube (7) by positioning screws (13). A rotating shaft (14) is integrally formed on the air supply seat (11). The rotating shaft (14) is rotatably mounted on the front cover plate (8) by means of a ball bearing (15). The air supply seat (11) and the mounting tube (7) are coaxially arranged.

3. The main nozzle support control system on the air jet loom according to claim 2, characterized in that: The air supply seat (11) is a scanning body structure with a convex cross-section, and a main air channel (16) and a secondary air channel (17) are provided on the air supply seat (11); the rotating shaft (14) is a tubular structure, and the tube cavity of the rotating shaft (14) is connected to the main air channel (16); the secondary air channel (17) is connected to the main air channel (16), and the secondary air channel (17) passes through the side wall of the air supply seat (11), and the port of the secondary air channel (17) is located in the middle of the side wall of the air supply seat (11); when the secondary air channel (17) is rotated to a horizontal direction, the secondary air channel (17) is aligned with the inner port of the air nozzle (10), and a drainage groove (18) is provided at the port position of the secondary air channel (17), and the drainage groove (18) is arranged in a crescent shape.

4. The main nozzle support control system on an air jet loom according to claim 3, characterized in that: The air supply seat (11) is composed of an air supply seat body (26) and a sealing layer (27), wherein the air supply seat body (26) is cast from steel, the sealing layer (27) is a flexible rubber layer, and the sealing layer (27) is located in the middle of the side wall of the air supply seat body (26), and the sealing layer (27) and the air supply seat body (26) are fixedly bonded, the drainage groove (18) is provided on the sealing layer (27), the main air channel (16) and the secondary air channel (17) are provided on the air supply seat body (26), and when the air supply seat (11) is actually installed, the outer wall of the sealing layer (27) is tightly fitted with the inner wall of the mounting tube (7).

5. The main nozzle support control system on the air jet loom according to claim 4, characterized in that: A servo motor (19) is fixedly mounted on the connecting bracket (6), a driving sprocket (20) is fixedly mounted on the output shaft of the servo motor (19), a driven sprocket (21) is fixedly mounted on the rotating shaft (14), the driving sprocket (20) and the driven sprocket (21) are connected in transmission via a driving chain (22), a bearing groove is provided at the end of the tube cavity of the rotating shaft (14), a sealing bearing (23) is fixedly mounted in the bearing groove, an air supply pipe (24) is fixedly mounted in the inner ring of the bearing of the sealing bearing (23), the air supply pipe (24) is a hard steel pipe, the air supply pipe (24) is fixed to the main nozzle bracket (3) via a positioning bracket (25), and the other end of the air supply pipe (24) is connected to the air supply port of the air supply device.

6. The main nozzle support control system on the air jet loom according to claim 5, characterized in that: The telescopic electric cylinder (2), the servo motor (19), and the air supply device are all connected to the control module on the loom main support (1) via electrical signals.

7. The main nozzle support control system on an air jet loom according to claim 5, characterized in that: A group of boosting chambers (28) are symmetrically provided on both sides of the air supply seat (11); the boosting chambers (28) are connected to the main air channel (16) via a connecting air channel (29); a piston (30) is movably provided in the boosting chamber (28); a force-bearing seat (32) is provided on the inner side wall of the mounting tube (7); the cross-section of the force-bearing seat (32) is crescent-shaped; a group of the force-bearing seats (32) are symmetrically provided, and a gap is left between the force-bearing seats (32) on both sides.

8. The main nozzle support control system for an air jet loom according to claim 7, characterized in that: The outer end of the piston (30) is hemispherical, and the inner end of the piston (30) is provided with a spring groove, the bottom of the spring groove is fixedly connected to a support spring (31), and when the support spring (31) is in a reset state, the outer end of the piston (30) is arranged to abut against the inner wall of the mounting tube (7), and when the piston (30) moves along the force bearing seat (32) until the support spring (31) is in a maximum compression state, the secondary air passage (17) is aligned with the air nozzle (10).

9. The main nozzle support control system on an air jet loom according to claim 8, characterized in that: The outer wall of the force bearing seat (32) is integrally formed with a connecting ear plate (33), the connecting ear plate (33) is provided with a mounting hole (34), the inner wall of the mounting tube (7) is provided with a bolt hole, the mounting hole (34) and the bolt hole are arranged in alignment with each other, and the connecting ear plate (33) is fixed to the inner wall of the mounting tube (7) by means of a positioning bolt (35), and the screw hole (12) and the bolt hole are arranged in an offset manner.

10. The main nozzle support control system on an air jet loom according to claim 8, characterized in that: The inner end of the piston (30) is provided with a main air groove (36), and the outer wall of the piston (30) is provided with a sealing air groove (37). The sealing air groove (37) is an annular groove with a semicircular cross-section, and the sealing air groove (37) is connected to the main air groove (36) via a connecting air groove (38). An annular sealing rubber layer (39) is integrally formed at the port position of the sealing air groove (37). When the air supply seat (11) moves in the mounting tube (7), the annular sealing rubber layer (39) is always completely in the boost chamber (28).

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