Weft insertion driving mechanism of rapier loom

Abstract

The weft insertion driving mechanism of the rapier loom comprises a rack, and a main driving motor is fixed to the lower portion of one side of the rack; gear shells are fixed to the left portion and the right portion of the machine frame, the main transmission shaft is movably connected to the machine frame and the two gear shells through bearings, and the main driving motor drives the main transmission shaft to rotate. A conjugate cam is fixed to the left portion or the right portion of the main transmission shaft and located in a gear shell, a rocker mandrel is movably connected into the gear shell through a bearing, a rocker arm is located in the gear shell, and a sleeve body portion on the front portion of the rocker arm is inserted into the rocker mandrel in a sleeved mode. Power transmitted by the gear shell is output upwards through the first transmission shaft and the vertical transmission shaft which extend front and back, so that the lengths of the weft insertion rapiers on the two sides are reduced, the running stroke of the weft insertion rapiers is reduced, meanwhile, the weft insertion rapiers are driven to run only through a single main driving motor, stability is good, synchronism is high, and manufacturing cost is reduced.

Description

Technical Field:

[0001] The present invention relates to the technical field of textile equipment, and more specifically to a weft insertion drive mechanism for a rapier loom. Background Art:

[0002] The rapier loom is currently the most widely used shuttleless loom. In addition to the characteristics of high speed, high automation degree, and high-efficiency production of shuttleless looms, its positive weft insertion method has strong variety adaptability and can adapt to the weft insertion of various yarns. Moreover, the rapier loom also has obvious advantages in multi-color weft weaving and can produce figured fabrics with up to 16 color wefts.

[0003] For existing rapier looms, such as multi-shed double weft insertion rapier looms, when performing velvet weaving, they will produce double-layer velvet. However, the drive mechanism of the existing weft insertion rapier generally extends the output shaft of the gearbox outward and then conveys it backward, which increases the length of the weft insertion rapier, increases its moving distance, makes the weft insertion line too long, and affects the weaving efficiency.

[0004] At the same time, the existing weft insertion rapiers on both sides are driven by separate motors, which increases the cost and also has a certain impact on the synchronism. Summary of the Invention:

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a weft insertion drive mechanism for a rapier loom, which outputs the power transmitted by the gear housing upward through the first drive shaft extending forward and backward and the vertical drive shaft, thereby reducing the length of the weft insertion rapiers on both sides, reducing their running stroke. At the same time, it only needs to be driven by a single main drive motor, with good stability, high synchronism, and reduced manufacturing cost.

[0006] The solution of the present invention to solve the above technical problems is:

[0007] A weft insertion drive mechanism for a rapier loom, including a frame, and a main drive motor is fixed to the lower part of one side of the frame;

[0008] Gear housings are fixed to the left and right parts of the frame, and the main drive shaft is movably connected to the frame and the two gear housings through bearings, and the main drive motor drives the main drive shaft to rotate;

[0009] A conjugate cam is fixed to the left or right part of the main drive shaft. The conjugate cam is located in the gear housing. A rocker core shaft is movably connected to the gear housing through a bearing. A rocker arm is located in the gear housing. The sleeve part at the front of the rocker arm is inserted into the rocker core shaft. Extension arms are formed at the upper and lower fronts of the rocker arm. Bearing wheels are installed at the ends of the extension arms. The outer wall surfaces of the upper and lower parts of the conjugate cam are closely attached to the outer wall surfaces of the corresponding bearing wheels;

[0010] One end of a connecting rod is movably connected to the bottom of the rocker arm through a hinge shaft, and the other end of the connecting rod is movably connected to the lower arm of a sector gear arm through a hinge shaft. The middle of the sector gear arm is movably connected to a swing arm core shaft through a bearing. The end of the swing arm core shaft is fixed to the side plate of the gear housing. A sector gear part is formed at the front of the sector gear arm. A cylindrical gear shaft is movably connected to the front of the gear housing through a bearing. A cylindrical gear part is formed on the cylindrical gear shaft. The cylindrical gear part meshes with the sector gear part. The end of the cylindrical gear shaft extends out of the gear housing and extends into a second housing fixed on the frame and is fixed with a first bevel gear. A first transmission shaft extending forward and backward is movably connected to the second housing through a bearing. A second bevel gear is fixed to the front end of the first transmission shaft. A third bevel gear is fixed or formed at the rear end of the first transmission shaft. The second bevel gear meshes with the first bevel gear. A vertical transmission shaft is movably connected to the upper part of the second housing through a bearing. A fourth bevel gear is formed or fixed at the bottom end of the vertical transmission shaft. The third bevel gear meshes with the fourth bevel gear. The top end of the vertical transmission shaft extends out of the top end of the second housing and is fixed with two sword transmission gears that are parallel and corresponding up and down.

[0011] A transverse support beam is fixed to the top surface of the top plate of the frame at the two gear housing positions. Sword magazine bases are fixed to both the left and right parts of the transverse support beam. Two weft insertion sword rods that are aligned up and down are installed in each sword magazine base. Tooth grooves are formed on the front wall surface of the weft insertion sword rod. The sword transmission gear meshes with the corresponding tooth groove.

[0012] A through groove is formed in the middle of the front wall plate of the sword magazine base. The rear part of the sword transmission gear extends out of the corresponding through groove.

[0013] Two L-shaped guide strips that extend left and right and are aligned up and down are fixed to the rear wall surface of the front wall plate of the sword magazine base. Wear-resistant strips are fixed to the top surface of the bottom plate of the guide strip. The weft insertion sword rod is inserted into the guide strip. The bottom surface of the weft insertion sword rod closely adheres to the top surface of the wear-resistant strip. A plurality of connecting plates are fixed to the front wall surface of the front wall plate of the sword magazine base. A front support plate is fixed to the connecting plate. The rear part of the front support plate extends out of the through groove formed in the middle of the front wall plate of the sword magazine base. The rear wall surface of the front support plate closely adheres to the front wall surface of the weft insertion sword rod. An upper limit part that extends horizontally backward is formed at the upper part of the rear wall surface of the front support plate. The bottom surface of the upper limit part closely adheres to or is close to the top surface of the weft insertion sword rod.

[0014] On the rear top surface of the transverse support beam, two vertically corresponding transverse slide rail members are fixed. On the front top surface of the transverse slide rail member, a chute extending left and right is formed. A slider is inserted into the chute. On the rear wall surface of the slider, a plurality of adjusting screw rods extending backward are fixed. The rear part of the adjusting screw rod extends out of a corresponding through hole formed in the middle of the rear wall plate of the transverse slide rail member and is screwed with a rear locking nut. The front end surface of the rear locking nut presses against the rear wall surface of the transverse slide rail member. A vertically extending vertical through groove is formed in the rear part of the transverse slide rail member. The vertical through groove communicates with the corresponding through hole. An adjusting nut is inserted into the corresponding vertical through groove. The adjusting screw rod is screwed into the adjusting nut;

[0015] On the front wall surface of the slider, a wear-resistant block is fixed. The front wall surface of the wear-resistant block closely adheres to the rear wall surface of the weft insertion sword rod.

[0016] Weft receiving sword heads are fixed at the ends of two weft insertion sword rods on one side, and weft sending sword heads are fixed at the ends of two weft insertion sword rods on the other side.

[0017] The second housing includes a bottom transverse housing and a vertical mounting housing fixed on the top surface of the bottom transverse housing. The first transmission shaft is movably connected in the bottom transverse housing through a bearing, and the vertical transmission shaft is movably connected in the vertical mounting housing through a bearing.

[0018] A driving wheel is fixed on the output shaft of the main driving motor. One end of the main transmission shaft extends out of the outer wall surface of one of the gear housings and is fixed with a transmission pulley. A belt is tensioned between the transmission pulley and the driving wheel.

[0019] The outstanding effect of the present invention is:

[0020] Compared with the prior art, it outputs the power conducted by the gear housing upward through the first transmission shaft and the vertical transmission shaft extending forward and backward, thereby reducing the lengths of the weft insertion sword rods on both sides and reducing their running strokes. At the same time, it only needs to be driven by a single main driving motor, with good stability, high synchronism, and reduced manufacturing costs. Brief description of the drawings:

[0021] Figure 1 is a partial structural schematic diagram of the present invention;

[0022] Figure 2 is a partial top view of the present invention;

[0023] Figure 3 is Figure 2 a partial enlarged view of;

[0024] Figure 4 is a partial structural schematic diagram of the interior of the present invention;

[0025] Figure 5 is a partial structural schematic diagram of the weft insertion sword rod with some components removed. Detailed implementation mode:

[0026] In an embodiment, as shown in Figures 1 to 5 a weft insertion driving mechanism of a rapier loom, which includes a frame 10, and a main driving motor 11 is fixed at the lower part of one side of the frame 10;

[0027] Gear housings 20 are fixed on both the left and right parts of the frame 10. The main transmission shaft 30 is movably connected to the frame 10 and the two gear housings 20 through bearings, and the main driving motor 11 drives the main transmission shaft 30 to rotate. A driving wheel 1 is fixed on the output shaft of the main driving motor 11. One end of the main transmission shaft 30 extends out of the outer wall surface of one of the gear housings 20 and is fixed with a transmission pulley 2, and a belt 3 is tensioned between the transmission pulley 2 and the driving wheel 1.

[0028] Furthermore, conjugate cams 31 are fixed on both the left and right parts of the main transmission shaft 30. The conjugate cams 31 are located in the gear housings 20. A rocker core shaft 21 is movably connected to the gear housings 20 through bearings. A rocker arm 22 is located in the gear housings 20. The sleeve part at the front of the rocker arm 22 is inserted into the rocker core shaft 21. Extension arms are formed on the upper and lower fronts of the rocker arm 22, and bearing rollers 23 are installed at the ends of the extension arms. The outer wall surfaces of the front and rear protruding parts on the upper and lower parts of the conjugate cams 31 are in close contact with the outer wall surfaces of the corresponding bearing rollers 23;

[0029] One end of a connecting rod 24 is movably connected to the bottom of the rocker arm 22 through a hinge shaft. The other end of the connecting rod 24 is movably connected to the lower arm part of a sector gear arm 25 through a hinge shaft. The middle part of the sector gear arm 25 is movably connected to a swing arm core shaft 26 through a bearing. The end of the swing arm core shaft 26 is fixed on the side plate of the gear housing 20. A sector gear part 251 is formed on the front of the sector gear arm 25. A cylindrical gear shaft 27 is movably connected to the front part of the gear housing 20 through a bearing. A cylindrical gear part is formed on the cylindrical gear shaft 27, and the cylindrical gear part meshes with the sector gear part 251. The end of the cylindrical gear shaft 27 extends out of the gear housing 20 and extends into a second housing 40 fixed on the frame 10 and is fixed with a first bevel gear 41. A first transmission shaft 42 extending forward and backward is movably connected to the second housing 40 through a bearing. A second bevel gear 43 is fixed at the front end of the first transmission shaft 42, and a third bevel gear 44 is fixed or formed at the rear end of the first transmission shaft 42. The second bevel gear 43 meshes with the first bevel gear 41. A vertical transmission shaft 45 is movably connected to the upper part of the second housing 40 through a bearing. A fourth bevel gear 46 is formed or fixed at the bottom end of the vertical transmission shaft 45. The third bevel gear 44 meshes with the fourth bevel gear 46. The top end of the vertical transmission shaft 45 extends out of the top end of the second housing 40 and is fixed with two transmission sword gears 47 that are parallel and corresponding up and down.

[0030] Furthermore, a transverse support beam 12 is fixed on the top surface of the top plate of the frame 10 at the two gear housings 20. Sword magazine bases 50 are fixed to both the left and right parts of the transverse support beam 12. Two weft insertion sword rods 60 that are aligned vertically are installed in each of the sword magazine bases 50. Tooth grooves are formed on the front wall surface of the weft insertion sword rod 60, and the transfer sword gear 47 meshes with the corresponding tooth grooves.

[0031] Furthermore, a through groove is formed in the middle of the front wall plate of the sword magazine base 50, and the rear part of the transfer sword gear 47 extends out of the corresponding through groove.

[0032] Furthermore, two guiding strips 51 that extend left and right and are vertically aligned and have an L-shaped cross-section are fixed to the rear wall surface of the front wall plate of the sword magazine base 50. A wear-resistant strip 52 is fixed to the top surface of the bottom plate of the guiding strip 51. The weft insertion sword rod 60 is inserted into the guiding strip 51, and the bottom surface of the weft insertion sword rod 60 is closely attached to the top surface of the wear-resistant strip 52. A plurality of connecting plates are fixed to the front wall surface of the front wall plate of the sword magazine base 50. A front support plate 53 is fixed to the connecting plate. A plurality of waist-shaped through holes that extend back and forth are formed on the front support plate 53. It is fixed by screwing the screw part of the bolt through the waist-shaped through hole and then screwing it to the connecting plate. It can adjust the front and rear positions of the front support plate 53 by loosening the bolt. The rear part of the front support plate 53 extends out of the through groove formed in the middle of the front wall plate of the sword magazine base 50. The rear wall surface of the front support plate 53 is closely attached to the front wall surface of the weft insertion sword rod 60. An upper limiting part 531 that extends horizontally backward is formed on the upper part of the rear wall surface of the front support plate 53. The bottom surface of the upper limiting part 531 is closely attached to or close to the top surface of the weft insertion sword rod 60. When the front and rear positions of the front support plate 53 are moved, it can drive the front and rear positions of the weft insertion sword rod 60 to be finely adjusted to meet the processing adjustment needs. After the adjustment is completed, just tighten the bolt.

[0033] Furthermore, two horizontally corresponding transverse slide rail members 70 are fixed to the rear top surface of the transverse support beam 12. A chute that extends left and right is formed on the front top surface of the transverse slide rail member 70. A slide block 71 is inserted into the chute. A plurality of adjusting screw rods 72 that extend backward are fixed to the rear wall surface of the slide block 71. The rear part of the adjusting screw rod 72 extends out of the corresponding through hole formed in the middle of the rear wall plate of the transverse slide rail member 70 and is screwed with a rear locking nut 73. The front end surface of the rear locking nut 73 presses against the rear wall surface of the transverse slide rail member 70. A vertically extending vertical through groove is formed in the rear part of the transverse slide rail member 70, and the vertical through groove communicates with the corresponding through hole. An adjusting nut 74 is inserted into the corresponding vertical through groove, and the adjusting screw rod 72 is screwed into the adjusting nut 74; it can move the front and rear positions of the adjusting screw rod 72 by loosening the rear locking nut 73 and the adjusting nut 74, thereby changing the front and rear positions of the slide block 71, and thus can change the front and rear positions of the weft insertion sword rod 60 to achieve position adjustment. It is adjusted simultaneously with the front support plate 53 to achieve coordinated adjustment, which is convenient for adjustment.

[0034] A wear-resistant block 711 is fixed on the front wall surface of the slider 71, and the front wall surface of the wear-resistant block 711 is closely attached to the rear wall surface of the weft insertion rapier 60.

[0035] Furthermore, weft receiving rapier heads are fixed at the ends of the two weft insertion rapiers 60 on one side, and weft supplying rapier heads are fixed at the ends of the two weft insertion rapiers 60 on the other side.

[0036] Furthermore, the second housing 40 includes a bottom horizontal housing and a vertical mounting housing fixed on the top surface of the bottom horizontal housing. The first transmission shaft 42 is movably connected in the bottom horizontal housing through bearings, and the vertical transmission shaft 45 is movably connected in the vertical mounting housing through bearings.

[0037] Working principle: When this embodiment is in use, the main drive motor 11 operates to make the drive wheel 1 rotate, and the drive pulley 2 is driven to operate through the belt 3, so that the main transmission shaft 30 rotates. At this time, the conjugate cam 31 rotates. When it rotates, the corresponding bearing follower 23 adjusts its front and rear positions along with the conjugate cam 31, realizing the swing of the rocker arm 22 around the rocker core shaft 21. At this time, the lower arm of the sector gear arm 25 is pulled back and forth through the connecting rod 24, so that the sector gear arm 25 swings back and forth around the swing arm core shaft 26, making the cylindrical gear shaft 27 rotate forward and backward. At this time, power is transmitted through components such as the first transmission shaft 42 and the vertical transmission shaft 45 of the second housing 40, and finally the rapier transmission gear 47 rotates back and forth, driving the weft insertion rapier 60 to move left and right. When it operates, the left weft insertion rapier 60 and the right weft insertion rapier 60 move relatively close to each other or relatively away from each other simultaneously. Weft receiving rapier heads are fixed at the ends of the two weft insertion rapiers 60 on one side, and weft supplying rapier heads are fixed at the ends of the two weft insertion rapiers 60 on the other side. When the weft receiving rapier head and the weft supplying rapier head approach each other, the weft receiving rapier head grabs the weft of the weft supplying rapier head. When the weft receiving rapier head and the weft supplying rapier head move away from each other, the weft receiving rapier head pulls away the weft, and the weft supplying rapier head grabs a new weft again.

[0038] It uses a single main drive motor 11 to operate for driving, reducing the manufacturing cost. At the same time, the synchronization effect and stability are improved.

[0039] Finally, the above embodiments are only used to illustrate the present invention, rather than limiting the present invention. Those of ordinary skill in the relevant technical fields can still make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention, and the patent protection scope of the present invention shall be defined by the claims.

Claims

1. A weft insertion drive mechanism for a rapier loom, comprising a frame (10), characterized in that: A main driving motor (11) is fixed to a lower portion of one side of the frame (10); The left and right parts of the frame (10) are both fixed with gear housings (20), the main transmission shaft (30) is movably connected to the frame (10) and the two gear housings (20) through bearings, and the main drive motor (11) drives the main transmission shaft (30) to rotate; A conjugate cam (31) is fixed to the left or right part of the main transmission shaft (30), the conjugate cam (31) is in the gear housing (20), a rocker shaft (21) is movably connected to the gear housing (20) via a bearing, a rocker arm (22) is in the gear housing (20), a sleeve portion at the front of the rocker arm (22) is inserted into the rocker shaft (21), an extension arm is formed at the front of the upper and lower parts of the rocker arm (22), a bearing support wheel (23) is installed at the end of the extension arm, and the outer wall surfaces of the upper and lower parts of the conjugate cam (31) are tightly attached to the outer wall surfaces of the corresponding bearing support wheels (23); The bottom of the rocker arm (22) is movably connected to one end of a connecting rod (24) via a hinge shaft, the other end of the connecting rod (24) is movably connected to the lower arm of the sector tooth arm (25) via a hinge shaft, the middle of the sector tooth arm (25) is movably connected to a swing arm core shaft (26) via a bearing, the end of the swing arm core shaft (26) is fixed to the side plate of the gear housing (20), the front of the sector tooth arm (25) is formed with a sector tooth portion (251), the front of the gear housing (20) is movably connected to a cylindrical gear shaft (27) via a bearing, the cylindrical gear shaft (27) is formed with a cylindrical gear portion, the cylindrical gear portion is meshed with the sector tooth portion (251), the end of the cylindrical gear shaft (27) extends out of the gear housing (20) and extends into a second housing (4) fixed on the frame (10). 0) and fixed with a first bevel gear (41); a first transmission shaft (42) extending forward and backward is movably connected in the second housing (40) through a bearing; a second bevel gear (43) is fixed to the front end of the first transmission shaft (42); a third bevel gear (44) is fixed or formed at the rear end of the first transmission shaft (42); the second bevel gear (43) is meshed with the first bevel gear (41); a vertical transmission shaft (45) is movably connected to the upper part of the second housing (40) through a bearing; a fourth bevel gear (46) is formed or fixed at the bottom end of the vertical transmission shaft (45); the third bevel gear (44) is meshed with the fourth bevel gear (46); the top end of the vertical transmission shaft (45) extends out of the top end of the second housing (40) and is fixed with two sword transmission gears (47) which are parallel and corresponding to each other in the upper and lower directions.

2. The weft insertion drive mechanism of a rapier loom according to claim 1, characterized in that: A transverse support beam (12) is fixed on the top surface of the top plate of the frame (10) at the two gear housings (20), and a sword library base (50) is fixed to the left and right parts of the transverse support beam (12). Two weft insertion rapiers (60) aligned up and down are installed in the sword library base (50), and a tooth groove is formed on the front wall surface of the weft insertion rapier (60), and the sword transmission gear (47) is meshed with the corresponding tooth groove.

3. The weft insertion drive mechanism of a rapier loom according to claim 2, characterized in that: A through slot is formed in the middle of the front wall plate of the sword storage base (50), and the rear portion of the sword transmission gear (47) extends out of the corresponding through slot.

4. The weft insertion drive mechanism of a rapier loom according to claim 2, characterized in that: Two guide strips (51) with L-shaped cross sections and aligned vertically and extending leftward and rightward are fixed on the rear wall surface of the front wall plate of the sword library base (50); a wear-resistant strip (52) is fixed on the top surface of the bottom plate of the guide strip (51); a weft insertion rapier (60) is inserted into the guide strip (51); the bottom surface of the weft insertion rapier (60) is in close contact with the top surface of the wear-resistant strip (52); a plurality of connecting plates are fixed on the front wall surface of the front wall plate of the sword library base (50); a front support plate (53) is fixed on the connecting plate; the rear portion of the front support plate (53) extends out of a through groove formed in the middle portion of the front wall plate of the sword library base (50); the rear wall surface of the front support plate (53) is in close contact with the front wall surface of the weft insertion rapier (60); an upper limit portion (531) extending horizontally backward is formed on the upper portion of the rear wall surface of the front support plate (53); the bottom surface of the upper limit portion (531) is in close contact with or close to the top surface of the weft insertion rapier (60).

5. The weft insertion drive mechanism of a rapier loom according to claim 2, characterized in that: The rear top surface of the transverse support beam (12) is fixed with two transverse slide rails (70) corresponding to each other in the upper and lower parts, the front top surface of the transverse slide rail (70) is formed with a slide groove extending left and right, the slider (71) is inserted in the slide groove, and a plurality of adjustment screws (72) extending backward are fixed on the rear wall surface of the slider (71), the rear part of the adjustment screw (72) extends out of the corresponding through hole formed in the middle part of the rear wall plate of the transverse slide rail (70) and is screwed with a rear locking nut (73), the front end surface of the rear locking nut (73) is pressed against the rear wall surface of the transverse slide rail (70), the rear part of the transverse slide rail (70) is formed with a vertical through groove extending up and down, the vertical through groove is communicated with the corresponding through hole, the adjustment nut (74) is inserted in the corresponding vertical through groove, and the adjustment screw (72) is screwed in the adjustment nut (74); A wear-resistant block (711) is fixed on the front wall surface of the sliding block (71), and the front wall surface of the wear-resistant block (711) is in close contact with the rear wall surface of the weft insertion rapier (60).

6. The weft insertion drive mechanism of a rapier loom according to claim 2, characterized in that: The ends of the two weft insertion rapiers (60) on one side are fixed with weft receiving rapier heads, and the ends of the two weft insertion rapiers (60) on the other side are fixed with weft sending rapier heads.

7. The weft insertion drive mechanism of a rapier loom according to claim 1, characterized in that: The second shell (40) comprises a bottom transverse shell and a vertical installation shell fixed on the top surface of the bottom transverse shell, the first transmission shaft (42) is movably connected in the bottom transverse shell via a bearing, and the vertical transmission shaft (45) is movably connected in the vertical installation shell via a bearing.

8. The weft insertion drive mechanism of a rapier loom according to claim 1, characterized in that: A driving wheel (1) is fixed on the output shaft of the main driving motor (11), one end of the main transmission shaft (30) extends out of the outer wall surface of one of the gear housings (20) and is fixed with a driving pulley (2), and a belt (3) is tensioned on the driving pulley (2) and the driving wheel (1).

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