A transmission structure of a rapier loom

Abstract

The utility model discloses a kind of sword rod loom transmission structure, belong to textile equipment technical field, including support, driven shaft, lower support shaft, upper support shaft and lower bottom shaft are installed on support;Driven shaft rotatable installation is driven rotation by transmission assembly, two groups eccentric wheel assemblies are fixedly installed on driven shaft, each group eccentric wheel assembly includes two eccentric wheels and is arranged in left and right interval along the length direction of driven shaft, and the rotation phase angle of two eccentric wheels is 0 °, the rotation phase angle of two eccentric wheels in same side is 180 °;Lower support shaft fixed installation, the both ends of lower support shaft are rotatably connected with lower link body, two lower link bodies and two eccentric wheels in a group of eccentric wheel assemblies one-to-one correspondence, the side of two lower link bodies is slidably contacted with corresponding eccentric wheel, and the end of two lower link bodies is connected by upper swing axle.It has the characteristics of reasonable structure, few components, stable performance, high transmission efficiency, especially few easy-to-damage parts, easy maintenance.

Description

Technical Field

[0001] This utility model relates to the field of textile equipment technology, and more specifically, to a transmission structure for a rapier loom. Background Technology

[0002] Rapier looms are currently the most widely used shuttleless looms, and the transmission structure is a crucial component, used to drive the heald frames in a reciprocating motion. Existing transmission structures typically convert the rotational motion of the drive shaft into the reciprocating motion of the heald frames through the forward and reverse rotation of a motor, along with gears and connecting rod assemblies. This transmission structure is complex, bulky, and difficult to disassemble and maintain. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0003] The purpose of this utility model is to provide a transmission structure for a rapier loom, aiming to solve at least one of the technical problems existing in the prior art. To achieve the above objective, the technical solution adopted is as follows: A transmission structure for a rapier loom includes a support frame, on which a drive shaft, a lower support shaft, an upper support shaft, and a lower bottom shaft are mounted; The drive shaft is rotatably mounted and driven to rotate by a transmission assembly. Two sets of eccentric wheel assemblies are fixedly mounted on the drive shaft. Each set of eccentric wheel assemblies includes two eccentric wheels arranged at left and right intervals along the length of the drive shaft. The rotation phase angle between the two eccentric wheels is 0°, and the rotation phase angle between the two eccentric wheels on the same side is 180°. The lower support shaft is fixedly installed, and the two ends of the lower support shaft are rotatably connected to the lower connecting rods. The two lower connecting rods correspond one-to-one with the two eccentric wheels in a set of eccentric wheel assemblies. The side parts of the two lower connecting rods slide in contact with the corresponding eccentric wheels, and the ends of the two lower connecting rods are connected by the upper swing shaft. The upper support shaft is fixedly installed, and the two ends of the upper support shaft are rotatably connected to the upper connecting rod body. The two upper connecting rod bodies correspond one-to-one with the two eccentric wheels in another set of eccentric wheel assemblies. The side parts of the two upper connecting rod bodies slide in contact with the corresponding eccentric wheels respectively. The ends of the two upper connecting rod bodies are connected by the lower swing shaft. The lower shaft is rotatably mounted, and an upper connector and a lower connector are fixedly mounted on the lower shaft. The upper connector is hinged to the upper swing shaft through an upper connecting rod assembly, and the lower connector is hinged to the lower swing shaft through a lower connecting rod assembly.

[0004] Preferably, the bracket includes a base, on which two wall panels are symmetrically arranged.

[0005] Preferably, the transmission assembly includes a transmission shaft, which is rotatably mounted on a bracket and driven by a motor. The transmission shaft and the drive shaft are connected by a chain or gear transmission.

[0006] Preferably, a spring is connected to the bracket, the spring is connected to the upper swing shaft or the lower swing shaft, and the spring is always in a stretched state.

[0007] Preferably, the upper connecting member includes a first bushing, which is fixedly fitted onto the lower bottom shaft, and a first connecting rod is fixedly connected to the outer wall of the first bushing.

[0008] Preferably, the upper connecting rod assembly includes a second connecting rod, one end of which is rotatably connected to the first connecting rod via a pin, the other end of which is connected to a first adjusting block, a third connecting rod connected to the first adjusting block, one end of which is movably passed through the first adjusting block and fitted with a first adjusting nut, and the other end of which is rotatably connected to the upper swing shaft via a bearing.

[0009] Preferably, the lower connector includes a second bushing, which is fixedly fitted onto the lower bottom shaft, and a fourth connecting rod is fixedly connected to the outer wall of the second bushing.

[0010] Preferably, the lower connecting rod assembly includes a fifth connecting rod, one end of which is rotatably connected to the fourth connecting rod via a pin, the other end of which is connected to a second adjusting block, a sixth connecting rod connected to the second adjusting block, one end of which is movably passed through the second adjusting block and fitted with a second adjusting nut, and the other end of which is rotatably connected to the lower swing shaft via a bearing.

[0011] Preferably, a plurality of heald frame connectors are provided at intervals on the lower bottom shaft; The heald frame connector includes a third bushing, which is fixedly mounted on the bottom shaft. Two seventh links are fixedly connected to the outer wall of the third bushing at circumferential intervals. Each seventh link is hinged to an eighth link, which is connected to the heald frame by a soft rope.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This utility model discloses a transmission structure for a rapier loom, which converts the rotational motion of the drive shaft into the reciprocating motion of the heald frame. It features a reasonable structure, light weight, compact size, few parts, stable performance, and high transmission efficiency. In particular, it has few vulnerable parts, low cost, and is easy to maintain. Attached Figure Description

[0013] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the heddle frame connector of this utility model.

[0016] In the diagram: 1. Drive shaft; 2. Lower support shaft; 3. Upper swing shaft; 4. Upper support shaft; 5. Lower swing shaft; 6. Lower bottom shaft; 7. Base; 8. Left wall panel; 9. Right wall panel; 10. Drive shaft; 11. Motor; 12. First gear; 13. Second gear; 14. Chain; 15. Eccentric wheel; 16. Lower connecting rod body; 17. Upper connecting rod body; 18. First bushing; 19. First connecting rod; 20. Second connecting rod; 21. First adjusting block; 22. Third connecting rod; 23. First adjusting nut; 24. Second bushing; 25. Fourth connecting rod; 26. Fifth connecting rod; 27. Second adjusting block; 28. Sixth connecting rod; 29. ​​Second adjusting nut; 30. Third bushing; 31. Seventh connecting rod; 32. Eighth connecting rod. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] like Figure 1 As shown, a preferred embodiment of this utility model provides a transmission structure for a rapier loom. The transmission structure mainly includes a bracket, a drive shaft 1, a lower support shaft 2, an upper swing shaft 3, an upper support shaft 4, a lower swing shaft 5, and a lower bottom shaft 6.

[0020] The support includes a base 7, which is made of two channel steels arranged front and back and fixedly connected to the main frame plate of the rapier loom. Two wall panels are fixedly connected symmetrically on the left and right sides of the base 7.

[0021] The drive shaft 1 is rotatably mounted on the bracket. Specifically, the left end of the drive shaft 1 passes through the left wall plate 8 and is mounted on the left wall plate 8 via a bearing, and the right end of the drive shaft 1 passes through the right wall plate 9 and is mounted on the right wall plate 9 via a bearing. The drive shaft 1 is driven to rotate by a transmission assembly, which includes a drive shaft 10. The drive shaft 10 is rotatably mounted on the right wall plate 9 via a bearing seat. The drive shaft 10 is driven to rotate by a motor 11 mounted on the large frame plate. A first gear 12 is mounted on the drive shaft 10, and a second gear 13 is mounted on the right end of the drive shaft 1. The first gear 12 and the second gear 13 are connected by a chain 14.

[0022] Two sets of eccentric wheel assemblies are fixedly installed on the drive shaft 1. Each set of eccentric wheel assemblies includes two eccentric wheels 15 arranged at intervals along the length of the drive shaft 1. The rotation phase angle of the two eccentric wheels in the same set is 0°. In addition, the rotation phase angle of the two eccentric wheels in different sets on the same side is 180°.

[0023] The lower support shaft 2 is arranged parallel to the active shaft 1 and is located in front of and below the active shaft 1. The lower support shaft 2 is fixedly installed on the bracket. Specifically, the left end of the lower support shaft 2 passes through the left wall panel 8 and is fixedly connected to the left wall panel 8, and the right end of the lower support shaft 2 passes through the right wall panel 9 and is fixedly connected to the right wall panel 9.

[0024] The left and right ends of the lower support shaft 2 are rotatably connected to the lower connecting rod body 16, specifically through the rotatable connection of the bearing seat. The two lower connecting rod bodies 16 correspond one-to-one with the two eccentric wheels in the first set of eccentric wheel assemblies, and the side parts of the two lower connecting rod bodies 16 respectively slide in contact with the corresponding eccentric wheel 15.

[0025] The upper swing shaft 3 and the lower support shaft 2 are arranged in parallel. The end of the lower connecting rod 16 on the left side is rotatably connected to the left end of the upper swing shaft 3 through a bearing seat, and the end of the lower connecting rod 16 on the right side is rotatably connected to the right end of the upper swing shaft 3 through a bearing seat.

[0026] The upper support shaft 4 is arranged parallel to the drive shaft 1 and is located in front of and above the drive shaft 1. The upper support shaft 4 is fixedly installed on the bracket. Specifically, the left end of the upper support shaft 4 passes through the left wall plate 8 and is fixedly connected to the left wall plate 8, and the right end of the upper support shaft 4 passes through the right wall plate 9 and is fixedly connected to the right wall plate 9.

[0027] The upper support shaft 4 is rotatably connected to the left and right ends of the upper connecting rod body 17, specifically through the rotatable connection of the bearing seat. The upper connecting rod body 17 has the same structure as the lower connecting rod body 16. The two upper connecting rod bodies 17 correspond one-to-one with the two eccentric wheels 15 in the second set of eccentric wheel assemblies, and the side parts of the two upper connecting rod bodies 17 respectively slide in contact with the corresponding eccentric wheels 15.

[0028] The lower swing shaft 5 is arranged in parallel with the upper support shaft 4. The end of the upper connecting rod 17 on the left is rotatably connected to the left end of the lower swing shaft 5 through a bearing seat, and the end of the upper connecting rod 17 on the right is rotatably connected to the right end of the lower swing shaft 5 through a bearing seat.

[0029] Furthermore, a spring is connected to the left wall panel 8 or the right wall panel 9, and the spring is connected to the upper swing shaft 3 or the lower swing shaft 5, and the spring is always in a stretched state.

[0030] The lower bottom shaft 6 is arranged parallel to the drive shaft 1 and is located behind the drive shaft 1. The lower bottom shaft 6 is rotatably mounted on the bracket. Specifically, the lower bottom shaft 6 is mounted on the right wall plate 9 through a bearing seat. The left end of the lower bottom shaft 6 is located between the left and right wall plates, and the right end of the lower bottom shaft 6 extends to the right.

[0031] The bottom shaft 6 is located between the left and right wall panels and is provided with upper and lower connectors at intervals on the shaft.

[0032] The upper connector includes a first bushing 18, which is fixedly mounted on the lower bottom shaft 6. A first connecting rod 19 is fixedly connected to the outer wall of the first bushing 18, and the first connecting rod 19 is arranged facing upward.

[0033] The upper connecting member is hinged to the upper swing shaft 3 via an upper connecting rod assembly. The upper connecting rod assembly includes a second connecting rod 20, one end of which is rotatably connected to the first connecting rod 19 via a pin. The other end of the second connecting rod 20 is connected to a first adjusting block 21. A third connecting rod 22 is connected to the first adjusting block 21, and one end of the third connecting rod 22 can movably pass through the first adjusting block 21 and is fitted with two first adjusting nuts 23. The total length of the upper connecting rod assembly can be adjusted by adjusting the two first adjusting nuts 23. The other end of the third connecting rod 22 is rotatably connected to the upper swing shaft 3 via a bearing. Specifically, the bearing is fitted onto the upper swing shaft 3, and the third connecting rod 22 is fixedly connected to the outer ring of the bearing.

[0034] The lower connector includes a second bushing 24, which is fixedly mounted on the lower bottom shaft 6. A fourth connecting rod 25 is fixedly connected to the outer wall of the second bushing 24, and the fourth connecting rod 25 is arranged downwards.

[0035] The lower connecting member is hinged to the lower swing shaft 5 via a lower connecting rod assembly. The lower connecting rod assembly includes a fifth connecting rod 26, one end of which is rotatably connected to the fourth connecting rod 25 via a pin. The other end of the fifth connecting rod 26 is connected to a second adjusting block 27. A sixth connecting rod 28 is connected to the second adjusting block 27, and one end of the sixth connecting rod 28 can movably pass through the second adjusting block 27 and is fitted with two second adjusting nuts 29. The total length of the lower connecting rod assembly can be adjusted by adjusting the two second adjusting nuts 29. The other end of the sixth connecting rod 28 is rotatably connected to the lower swing shaft 5 via a bearing. Specifically, the bearing is mounted on the lower swing shaft 5, and the sixth connecting rod 28 is fixedly connected to the outer ring of the bearing.

[0036] Several heddle frame connectors are evenly spaced on the shaft body located on the right side of the right wall panel 9 on the bottom shaft 6.

[0037] like Figure 2 As shown, the heald frame connector includes a third bushing 30, which is fixedly mounted on the bottom shaft 6. Two seventh links 31 are fixedly connected to the outer wall of the third bushing 30 at intervals along the circumference. In this embodiment, the two seventh links 31 are arranged symmetrically front and back. Each seventh link 31 is hinged to an eighth link 32 by a pin. The eighth link 32 is connected to the heald frame by a soft rope.

[0038] The operation process of the transmission structure in this embodiment will be described.

[0039] The motor drives the drive shaft to rotate through the transmission assembly, and the drive shaft 1 drives two sets of eccentric wheel assemblies to rotate.

[0040] When the first set of eccentric wheel assemblies drives the two lower connecting rods 16 to rotate forward, it drives the upper swing shaft 3 to move forward. This, in turn, through the cooperation of the upper connecting rod assembly and the upper connector, drives the lower bottom shaft 6 to rotate forward, ultimately driving the heald frame to move downward. During this process, the lower bottom shaft 6 rotates forward, and through the cooperation of the lower connecting rod assembly and the lower connector, it drives the lower swing shaft 5 to move backward, thereby driving the two upper connecting rods 17 to move backward. Since the rotation phase angle of the two sets of eccentric wheel assemblies is 180°, the two upper connecting rods 17 will not interfere with the two eccentric wheels 15 in the second set of eccentric wheel assemblies during their backward movement, and will maintain sliding contact.

[0041] Similarly, when the second set of eccentric wheel assemblies drives the two upper connecting rods 17 to rotate forward, it can drive the lower swing shaft 5 to move forward, and then drive the lower bottom shaft 6 to rotate backward through the cooperation of the lower connecting rod assembly and the lower connecting piece, and finally drive the heald frame to move upward. During this process, the lower bottom shaft 6 rotates backward, and through the cooperation of the upper connecting rod assembly and the upper connecting piece, it can drive the upper swing shaft 3 to move backward, and then drive the two lower connecting rods 16 to move backward. Similarly, since the rotation phase angle of the two sets of eccentric wheel assemblies is 180°, the two lower connecting rods 16 will not interfere with the two eccentric wheels 15 in the first set of eccentric wheel assemblies during the backward movement, and will maintain sliding contact.

[0042] The above process enables the heald frame to move up and down repeatedly.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A transmission structure for a rapier loom, characterized in that, Includes a bracket, on which are mounted a drive shaft, a lower support shaft, an upper support shaft, and a lower bottom shaft; The drive shaft is rotatably mounted and driven to rotate by a transmission assembly. Two sets of eccentric wheel assemblies are fixedly mounted on the drive shaft. Each set of eccentric wheel assemblies includes two eccentric wheels arranged at left and right intervals along the length of the drive shaft. The rotation phase angle between the two eccentric wheels is 0°, and the rotation phase angle between the two eccentric wheels on the same side is 180°. The lower support shaft is fixedly installed, and the two ends of the lower support shaft are rotatably connected to the lower connecting rods. The two lower connecting rods correspond one-to-one with the two eccentric wheels in a set of eccentric wheel assemblies. The side parts of the two lower connecting rods slide in contact with the corresponding eccentric wheels, and the ends of the two lower connecting rods are connected by the upper swing shaft. The upper support shaft is fixedly installed, and the two ends of the upper support shaft are rotatably connected to the upper connecting rod body. The two upper connecting rod bodies correspond one-to-one with the two eccentric wheels in another set of eccentric wheel assemblies. The side parts of the two upper connecting rod bodies slide in contact with the corresponding eccentric wheels respectively. The ends of the two upper connecting rod bodies are connected by the lower swing shaft. The lower shaft is rotatably mounted, and an upper connector and a lower connector are fixedly mounted on the lower shaft. The upper connector is hinged to the upper swing shaft through an upper connecting rod assembly, and the lower connector is hinged to the lower swing shaft through a lower connecting rod assembly.

2. The transmission structure for a rapier loom according to claim 1, characterized in that, The bracket includes a base, on which two wall panels are symmetrically arranged.

3. The transmission structure for a rapier loom according to claim 1, characterized in that, The transmission assembly includes a drive shaft, which is rotatably mounted on a bracket and driven by a motor. The drive shaft and the drive shaft are connected by a chain or gear transmission.

4. The transmission structure for a rapier loom according to claim 1, characterized in that, A spring is connected to the bracket, and the spring is connected to the upper swing shaft or the lower swing shaft, and the spring is always in a stretched state.

5. The transmission structure for a rapier loom according to claim 1, characterized in that, The upper connecting member includes a first bushing, which is fixedly fitted onto the lower bottom shaft, and a first connecting rod is fixedly connected to the outer wall of the first bushing.

6. The transmission structure for a rapier loom according to claim 5, characterized in that, The upper connecting rod assembly includes a second connecting rod, one end of which is rotatably connected to the first connecting rod via a pin, the other end of which is connected to a first adjusting block, a third connecting rod connected to the first adjusting block, one end of which is movably passed through the first adjusting block and is fitted with a first adjusting nut, and the other end of which is rotatably connected to the upper swing shaft via a bearing.

7. The transmission structure for a rapier loom according to claim 1, characterized in that, The lower connector includes a second bushing, which is fixedly mounted on the lower bottom shaft, and a fourth connecting rod is fixedly connected to the outer wall of the second bushing.

8. The transmission structure for a rapier loom according to claim 7, characterized in that, The lower linkage assembly includes a fifth linkage. One end of the fifth linkage is rotatably connected to the fourth linkage via a pin. The other end of the fifth linkage is connected to a second adjusting block. A sixth linkage is connected to the second adjusting block. One end of the sixth linkage can move through the second adjusting block and is fitted with a second adjusting nut. The other end of the sixth linkage is rotatably connected to the lower swing shaft via a bearing.

9. The transmission structure for a rapier loom according to claim 1, characterized in that, Several heald frame connectors are spaced apart on the lower bottom shaft; The heald frame connector includes a third bushing, which is fixedly mounted on the bottom shaft. Two seventh links are fixedly connected to the outer wall of the third bushing at circumferential intervals. Each seventh link is hinged to an eighth link, which is connected to the heald frame by a soft rope.

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